X0206 3 2016-06-26 0 0001082554 UNITED THERAPEUTICS Corp UTHR 0001673232 BENKOWITZ MICHAEL C/O UNITED THERAPEUTICS CORPORATION 1040 SPRING STREET SILVER SPRING MD 20910 1 President and COO Common Stock 1088 D Share Tracking Award 53.83 2018-01-02 2023-01-02 Common Stock 100000 D Share Tracking Award 163.30 2016-03-13 2025-03-13 Common Stock 37200 D Share Tracking Award 94.96 2015-03-14 2024-03-14 Common Stock 40000 D Share Tracking Award 47.50 2013-03-15 2022-03-15 Common Stock 6450 D Share Tracking Award 61.06 2014-03-15 2023-03-15 Common Stock 18400 D Stock Options 120.26 2017-03-15 2026-03-15 Common Stock 39200 D Share Tracking Award 68.14 2012-04-04 2021-04-04 Common Stock 21750 D These share tracking awards cliff vest on January 2, 2018, and settle in cash only. These share tracking awards vest in one-fourth increments on each of March 13, 2016, 2017, 2018 and 2019, and settle in cash only. These share tracking awards vest in one-fourth increments on each of March 14, 2015, 2016, 2017 and 2018, and settle in cash only. Of the outstanding awards, 20,000 are vested as of the date of this filing. These share tracking awards vested in one-fourth increments on each of March 15, 2013, 2014, 2015 and 2016, and settle in cash only. All of the remaining awards are fully vested. These share tracking awards vest in one-fourth increments on each of March 15, 2014, 2015, 2016 and 2017, and settle in cash only. Of the outstanding awards, 9,200 are vested as of the date of this filing, and the remaining 9,200 are expected to vest on March 15, 2017. These stock options vest in one-fourth increments on each of March 15, 2017, 2018, 2019 and 2020. These share tracking awards vested in one-fourth increments on each of April 4, 2012, 2013, 2014 and 2015, and settle in cash only. All remaining awards are fully vested. /s/ John S. Hess, Jr. under Power of Attorney 2016-06-27