X0306 4 2021-07-08 0001082554 UNITED THERAPEUTICS Corp UTHR 0001237334 CAUSEY CHRISTOPHER C/O UNITED THERAPEUTICS CORPORATION 1040 SPRING STREET SILVER SPRING MD 20910 1 Restricted Stock Units 0 2021-07-08 4 A 0 2160 0 A 2022-07-08 Common Stock 2160 2160 D Each restricted stock unit represents the right to receive, following vesting, one share of United Therapeutics Corporation common stock. Annual non-employee director grant of restricted stock units, which are awarded each year on the date of the first board meeting following the issuer's Annual Meeting of Shareholders Award becomes fully vested on the one-year anniversary of the grant date only if the reporting person attends at least 75% of the regularly scheduled meetings of the issuer's Board and his or her committee meetings from the date of grant until the date of the issuer's next annual meeting of shareholders. /s/ John S. Hess, Jr. under Power of Attorney 2021-07-09