X - SEC Form 4 insider transactions

SVP, GC & CCO Holloway Duane D was granted 122,687 shares and returned 336,825 shares to the company, closing all direct ownership in the company (SEC Form 4)

VP, Controller & CAO Grewal Manpreet returned 82,030 shares to the company and was granted 9,889 shares, closing all direct ownership in the company (SEC Form 4)

SVP & Chief Financial Officer Graziano Jessica returned 363,714 shares to the company and was granted 149,488 shares, closing all direct ownership in the company (SEC Form 4)

SVP & Chief Mfg Officer - NAFR Buckiso Scott D returned 346,870 shares to the company and was granted 122,687 shares, closing all direct ownership in the company (SEC Form 4)

SVP Business Development Bruno James E. returned 291,233 shares to the company and was granted 122,687 shares, closing all direct ownership in the company (SEC Form 4)

SVP Adv. Tech. Steelmaking Brown Daniel R returned 167,980 shares to the company and was granted 32,574 shares, closing all direct ownership in the company (SEC Form 4)

Pres. & CEO Burritt David B returned 1,871,324 shares to the company and was granted 372,812 shares, closing all direct ownership in the company (SEC Form 4)

Director Sutherland David returned 250,801 shares to the company, closing all direct ownership in the company (SEC Form 4)

Director Mcgarry Michael H returned 51,001 shares to the company, closing all direct ownership in the company (SEC Form 4)

Director Mascarenas Paul Anthony returned 82,585 shares to the company, closing all direct ownership in the company (SEC Form 4)

Director Gerber Murry returned 229,868 shares to the company, closing all direct ownership in the company (SEC Form 4)

Director Engel John returned 99,029 shares to the company, closing all direct ownership in the company (SEC Form 4)

Director Dunlap Terry L returned 27,985 shares to the company, closing all direct ownership in the company (SEC Form 4)

Director Davis Alicia J. returned 17,948 shares to the company, closing all direct ownership in the company (SEC Form 4)

Director Ayers Andrea J. returned 33,809 shares to the company, closing all direct ownership in the company (SEC Form 4)

Director Atkinson Tracy A returned 41,342 shares to the company, closing all direct ownership in the company (SEC Form 4)

Director Ayers Andrea J. was granted 7,041 units of United States Steel Corporation Common Stock, increasing direct ownership by 26% to 33,786 units (SEC Form 4)

Director Engel John was granted 4,132 units of United States Steel Corporation Common Stock, increasing direct ownership by 4% to 98,943 units (SEC Form 4)

Director Gerber Murry was granted 4,132 units of United States Steel Corporation Common Stock, increasing direct ownership by 2% to 229,805 units (SEC Form 4)

Director Mcgarry Michael H was granted 4,132 units of United States Steel Corporation Common Stock, increasing direct ownership by 9% to 50,960 units (SEC Form 4)

Director Dunlap Terry L was granted 4,929 units of United States Steel Corporation Common Stock, increasing direct ownership by 21% to 27,985 units (SEC Form 4)

Director Sutherland David was granted 10,562 units of United States Steel Corporation Common Stock, increasing direct ownership by 4% to 250,589 units (SEC Form 4)

Director Mascarenas Paul Anthony was granted 4,226 units of United States Steel Corporation Common Stock, increasing direct ownership by 5% to 82,512 units (SEC Form 4)

Director Davis Alicia J. was granted 3,873 units of United States Steel Corporation Common Stock, increasing direct ownership by 28% to 17,948 units (SEC Form 4)

Director Atkinson Tracy A was granted 3,873 units of United States Steel Corporation Common Stock, increasing direct ownership by 10% to 41,314 units (SEC Form 4)

Director Tracey Patricia A covered exercise/tax liability with 84 units of United States Steel Corporation Common Stock, decreasing direct ownership by 0.08% to 102,655 units (SEC Form 4)

Director Mascarenas Paul Anthony covered exercise/tax liability with 26 units of United States Steel Corporation Common Stock, decreasing direct ownership by 0.03% to 78,286 units (SEC Form 4)

Director Faraci John V covered exercise/tax liability with 26 units of United States Steel Corporation Common Stock, decreasing direct ownership by 0.05% to 49,977 units (SEC Form 4)

Director Davis Alicia J. covered exercise/tax liability with 47 units of United States Steel Corporation Common Stock, decreasing direct ownership by 0.33% to 14,075 units (SEC Form 4)

Director Atkinson Tracy A covered exercise/tax liability with 47 units of United States Steel Corporation Common Stock, decreasing direct ownership by 0.13% to 37,441 units (SEC Form 4)

SVP, GC & CCO Holloway Duane D covered exercise/tax liability with 6,761 units of United States Steel Corporation Common Stock, decreasing direct ownership by 3% to 209,170 units (SEC Form 4)

VP, Controller & CAO Grewal Manpreet covered exercise/tax liability with 1,251 units of United States Steel Corporation Common Stock, decreasing direct ownership by 2% to 69,206 units (SEC Form 4)

SVP & Chief Financial Officer Graziano Jessica covered exercise/tax liability with 11,940 units of United States Steel Corporation Common Stock, decreasing direct ownership by 5% to 211,444 units (SEC Form 4)

Pres. & CEO Burritt David B covered exercise/tax liability with 38,335 units of United States Steel Corporation Common Stock, decreasing direct ownership by 3% to 1,196,647 units (SEC Form 4)

SVP & Chief Mfg Officer - NAFR Buckiso Scott D covered exercise/tax liability with 6,565 units of United States Steel Corporation Common Stock, decreasing direct ownership by 3% to 213,814 units (SEC Form 4)

SVP Business Development Bruno James E. covered exercise/tax liability with 6,536 units of United States Steel Corporation Common Stock, decreasing direct ownership by 4% to 162,367 units (SEC Form 4)

SVP Adv. Tech. Steelmaking Brown Daniel R covered exercise/tax liability with 5,065 units of United States Steel Corporation Common Stock, decreasing direct ownership by 4% to 130,456 units (SEC Form 4)

SVP & Chief Financial Officer Graziano Jessica was granted 75,246 units of United States Steel Corporation Common Stock and covered exercise/tax liability with 9,056 units of United States Steel Corporation Common Stock, increasing direct ownership by 42% to 223,384 units (SEC Form 4)

SVP, GC & CCO Holloway Duane D was granted 57,017 units of United States Steel Corporation Common Stock and covered exercise/tax liability with 15,415 units of United States Steel Corporation Common Stock, increasing direct ownership by 24% to 215,931 units (SEC Form 4)

VP, Controller & CAO Grewal Manpreet was granted 14,212 units of United States Steel Corporation Common Stock and covered exercise/tax liability with 3,265 units of United States Steel Corporation Common Stock, increasing direct ownership by 18% to 70,457 units (SEC Form 4)

Pres. & CEO Burritt David B was granted 354,021 units of United States Steel Corporation Common Stock and covered exercise/tax liability with 113,224 units of United States Steel Corporation Common Stock, increasing direct ownership by 24% to 1,234,982 units (SEC Form 4)

SVP Business Development Bruno James E. was granted 57,017 units of United States Steel Corporation Common Stock and covered exercise/tax liability with 14,811 units of United States Steel Corporation Common Stock, increasing direct ownership by 33% to 168,903 units (SEC Form 4)

SVP Adv. Tech. Steelmaking Brown Daniel R was granted 49,970 units of United States Steel Corporation Common Stock and covered exercise/tax liability with 10,689 units of United States Steel Corporation Common Stock, increasing direct ownership by 41% to 135,521 units (SEC Form 4)

SVP & Chief Mfg Officer - NAFR Buckiso Scott D was granted 57,017 units of United States Steel Corporation Common Stock and covered exercise/tax liability with 15,313 units of United States Steel Corporation Common Stock, increasing direct ownership by 23% to 220,379 units (SEC Form 4)

SVP, GC & CCO Holloway Duane D covered exercise/tax liability with 2,562 units of United States Steel Corporation Common Stock, decreasing direct ownership by 1% to 174,329 units (SEC Form 4)

VP, Controller & CAO Grewal Manpreet covered exercise/tax liability with 733 units of United States Steel Corporation Common Stock, decreasing direct ownership by 1% to 59,510 units (SEC Form 4)

Pres. & CEO Burritt David B covered exercise/tax liability with 19,427 units of United States Steel Corporation Common Stock, decreasing direct ownership by 2% to 994,185 units (SEC Form 4)

SVP & Chief Mfg Officer - NAFR Buckiso Scott D covered exercise/tax liability with 2,381 units of United States Steel Corporation Common Stock, decreasing direct ownership by 1% to 178,675 units (SEC Form 4)

SVP Global Info Technology Bruno James E. covered exercise/tax liability with 2,439 units of United States Steel Corporation Common Stock, decreasing direct ownership by 2% to 126,697 units (SEC Form 4)

SVP Adv. Tech. Steelmaking Brown Daniel R covered exercise/tax liability with 1,714 units of United States Steel Corporation Common Stock, decreasing direct ownership by 2% to 96,240 units (SEC Form 4)

SVP & Chief Mfg Officer - NAFR Buckiso Scott D exercised 8,880 units of United States Steel Corporation Common Stock at a strike of $24.78 and covered exercise/tax liability with 6,965 units of United States Steel Corporation Common Stock, increasing direct ownership by 1% to 181,056 units (SEC Form 4)

Pres. & CEO Burritt David B exercised 18,260 units of United States Steel Corporation Common Stock at a strike of $24.78, increasing direct ownership by 2% to 1,013,612 units (SEC Form 4)

SVP Adv. Tech. Steelmaking Brown Daniel R covered exercise/tax liability with 21,451 units of United States Steel Corporation Common Stock, decreasing direct ownership by 18% to 97,954 units (SEC Form 4)

Dunlap Terry L was granted 5,724 units of United States Steel Corporation Common Stock, increasing direct ownership by 33% to 23,056 units (SEC Form 4)

Tracey Patricia A was granted 8,177 units of United States Steel Corporation Common Stock, increasing direct ownership by 9% to 102,248 units (SEC Form 4)

Sutherland David was granted 12,266 units of United States Steel Corporation Common Stock, increasing direct ownership by 5% to 238,730 units (SEC Form 4)

Mascarenas Paul Anthony was granted 4,906 units of United States Steel Corporation Common Stock, increasing direct ownership by 7% to 77,881 units (SEC Form 4)

Mcgarry Michael H was granted 4,498 units of United States Steel Corporation Common Stock, increasing direct ownership by 11% to 46,576 units (SEC Form 4)

Johnson Jeh C. was granted 8,177 units of United States Steel Corporation Common Stock, increasing direct ownership by 13% to 72,124 units (SEC Form 4)

Gerber Murry was granted 4,798 units of United States Steel Corporation Common Stock, increasing direct ownership by 2% to 225,288 units (SEC Form 4)