X0306 4 2022-02-22 0 0001163302 UNITED STATES STEEL CORP X 0001700476 Grewal Manpreet 600 GRANT STREET PITTSBURGH PA 15219 0 1 0 0 VP, Controller & CAO United States Steel Corporation Common Stock 2022-02-22 4 A 0 5790 0.00 A 31517 D United States Steel Corporation Common Stock 2022-02-23 4 F 0 874 23.81 D 30643 D United States Steel Corporation Common Stock 1321.326 I By 401(k) Plan This line reflects the grant of restricted stock units (RSUs). RSUs vest ratably over three years, one-third on each of the first, second and third grant date anniversaries. RSUs are payable in stock only. This line reflects the tax withholding on the vesting of RSUs that were granted on February 23, 2021. /s/ Megan Bombick by Power of Attorney 2022-02-24