THORATEC CORP

CUSIP: 885175307 Class: COM NEW

COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS's Holding History (CIK: 0001083190)

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

Q3 2015
Shares 212,670 Value ($000) $13,454 Avg Close — Range —
Q2 2015
Shares 15,660 Value ($000) $698 Avg Close — Range —
Q1 2015
Shares 14,122 Value ($000) $592 Avg Close — Range —
Q4 2014
Shares 11,798 Value ($000) $383 Avg Close — Range —
Q3 2014
Shares 7,813 Value ($000) $209 Avg Close — Range —
Q2 2014
Shares 7,909 Value ($000) $276 Avg Close — Range —
Q1 2014
Shares 7,928 Value ($000) $284 Avg Close — Range —
Q4 2013
Shares 7,995 Value ($000) $293 Avg Close — Range —
Q3 2013
Shares 8,166 Value ($000) $305 Avg Close — Range —
Q2 2013
Shares 8,158 Value ($000) $255 Avg Close — Range —