(1) | Registration Statement (Form S-8 No. 333-95419) pertaining to the United Therapeutics Corporation's Equity Incentive Plan, | |||||||
(2) | Registration Statement (Form S-8 No. 333-173858) pertaining to the United Therapeutics Corporation 2011 Share Tracking Awards Plan, | |||||||
(3) | Registration Statement (Form S-4 No. 333-173857) pertaining to the United Therapeutics Corporation common stock, | |||||||
(4) | Registration Statement (Form S-8 No. 333-179746) pertaining to the United Therapeutics Corporation 2011 Share Tracking Awards Plan, | |||||||
(5) | Registration Statement (Form S-8 No. 333-182851) pertaining to the United Therapeutics Corporation Employee Stock Purchase Plan, | |||||||
(6) | Registration Statement (Form S-8 No. 333-188241) pertaining to the United Therapeutics Corporation 2011 Share Tracking Awards Plan, | |||||||
(7) | Registration Statement (Form S-8 No. 333-197685) pertaining to the United Therapeutics Corporation 2011 Share Tracking Awards Plan, | |||||||
(8) | Registration Statement (Form S-8 No. 333-205309) pertaining to the United Therapeutics Corporation 2015 Stock Incentive Plan, | |||||||
(9) | Registration Statement (Form S-8 No. 333-225942) pertaining to the United Therapeutics Corporation 2015 Stock Incentive Plan, | |||||||
(10) | Registration Statement (Form S-8 No. 333-229992) pertaining to the United Therapeutics Corporation 2019 Inducement Stock Incentive Plan, | |||||||
(11) | Registration Statement (Form S-8 No. 333-232906) pertaining to the United Therapeutics Corporation 2015 Stock Incentive Plan, | |||||||
(12) | Registration Statement (Form S-8 No. 333-240156) pertaining to the United Therapeutics Corporation 2015 Stock Incentive Plan, and | |||||||
(13) | Registration Statement (Form S-8 No. 333-258434) pertaining to the United Therapeutics Corporation 2015 Stock Incentive Plan; |