UNITED THERAPEUTICS CORP DEL

Ticker: UTHR CUSIP: 91307C102 Class: EQTY

IRIDIAN ASSET MANAGEMENT LLC/CT's Holding History (CIK: 0001033427)

Note: Option positions (PUT/CALL) are excluded.

Q3 2015

Shares 1,970,939 Value ($000) $258,666 Avg Close $160.39 Range $129.48 - $181.03

Q2 2015

Shares 1,552,749 Value ($000) $270,101 Avg Close $179.89 Range $157.20 - $190.29

Q1 2015

Shares 1,448,124 Value ($000) $249,707 Avg Close $152.45 Range $124.21 - $181.61

Q4 2014

Shares 1,008,720 Value ($000) $130,619 Avg Close $128.87 Range $118.47 - $137.84

Q3 2014

Shares 773,080 Value ($000) $99,457 Avg Close $103.09 Range $86.04 - $136.93

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2015	1,970,939	$258,666	$160.39	$129.48 - $181.03
Q2 2015	1,552,749	$270,101	$179.89	$157.20 - $190.29
Q1 2015	1,448,124	$249,707	$152.45	$124.21 - $181.61
Q4 2014	1,008,720	$130,619	$128.87	$118.47 - $137.84
Q3 2014	773,080	$99,457	$103.09	$86.04 - $136.93