THORATEC CORP

CUSIP: 885175307 Class: COM NEW

PERCEPTIVE ADVISORS LLC's Holding History (CIK: 0001224962)

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

Q3 2015
Shares 86,000 Value ($000) $5,440 Avg Close — Range —
Q2 2015
Shares 226,000 Value ($000) $10,073 Avg Close — Range —
Q1 2015
Shares 300,000 Value ($000) $12,567 Avg Close — Range —
Q4 2014
Shares 392,465 Value ($000) $12,739 Avg Close — Range —
Q3 2014
Shares 147,501 Value ($000) $3,943 Avg Close — Range —