ARTHROCARE CORP

CUSIP: 043136100 Class: CMN

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

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

Q3 2013
Shares 342,759 Value ($000) $12,195 Avg Close — Range —
Q1 2013
Shares 121,978 Value ($000) $4,240 Avg Close — Range —