REGENERON PHARMACEUTICALS

Ticker: REGN CUSIP: 75886F107 Class: COM

Redmile Group, LLC's Holding History (CIK: 0001425738)

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

Q4 2013

Shares 1,000 Value ($000) $275 Avg Close $286.03 Range $256.27 - $317.74

Q3 2013

Shares 80,400 Value ($000) $25,155 Avg Close $261.58 Range $224.53 - $318.07

Q2 2013

Shares 61,000 Value ($000) $13,718 Avg Close $231.58 Range $176.14 - $282.42

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2013	1,000	$275	$286.03	$256.27 - $317.74
Q3 2013	80,400	$25,155	$261.58	$224.53 - $318.07
Q2 2013	61,000	$13,718	$231.58	$176.14 - $282.42