THORATEC CORP

CUSIP: 885175307 Class: COM NEW

Rock Springs Capital Management LP's Holding History (CIK: 0001595725)

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

Q3 2015
Shares 120,000 Value ($000) $7,591 Avg Close — Range —
Q2 2015
Shares 532,500 Value ($000) $23,734 Avg Close — Range —
Q1 2015
Shares 515,000 Value ($000) $21,573 Avg Close — Range —
Q4 2014
Shares 533,500 Value ($000) $17,317 Avg Close — Range —
Q3 2014
Shares 521,000 Value ($000) $13,926 Avg Close — Range —
Q2 2014
Shares 492,200 Value ($000) $17,158 Avg Close — Range —
Q1 2014
Shares 401,000 Value ($000) $14,360 Avg Close — Range —
Q4 2013
Shares 275,000 Value ($000) $10,065 Avg Close — Range —