X0202 4 2007-02-01 0 0001082554 UNITED THERAPEUTICS CORP UTHR 0001106578 ROTHBLATT MARTINE A 1 1 0 0 CEO Common Stock 2007-02-01 2007-02-01 4 M 0 152 19.8 A 211054 D Common Stock 2007-02-01 2007-02-01 4 M 0 348 11.31 A 211402 D Common Stock 2007-02-01 2007-02-01 4 M 0 1500 15.69 A 212902 D Common Stock 2007-02-01 2007-02-01 4 S 0 2000 53.54 D 210.902 D Employee Stock Options 19.8 2007-02-01 2007-02-01 4 M 0 152 0 D 1998-11-23 2008-11-23 Common Stock 152 1353764 D Employee Stock Options 11.31 2007-02-01 2007-02-01 4 M 0 348 0 D 2001-04-16 2011-04-16 Common Stock 348 1353416 D Employee Stock Options 15.69 2007-02-01 2007-02-01 4 M 0 1500 0 D 2000-12-15 2010-12-15 Common Stock 1500 1351916 D This exercise and sale of 2,000 shares is pursuant to the 10b5-1 Plan adopted by the reporting person on August 21, 2006. Includes 20,173 shares held by the reporting person's spouse. Includes 1,468 shares issuable upon the exercise of stock options held by the reporting person's spouse. /s/ Paul A. Mahom under Power of Attorney 2007-02-02