THORATEC CORP

CUSIP: 885175307 Class: COM NEW

PFM Health Sciences, LP's Holding History (CIK: 0001442756)

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

Q3 2015
Shares 432,577 Value ($000) $27,365 Avg Close — Range —
Q2 2015
Shares 730,074 Value ($000) $32,539 Avg Close — Range —
Q1 2015
Shares 565,799 Value ($000) $23,701 Avg Close — Range —
Q4 2014
Shares 466,911 Value ($000) $15,156 Avg Close — Range —