THORATEC CORP

CUSIP: 885175307 Class: COM NEW

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q2 2015
Shares 3,477 Value ($000) $154 Avg Close — Range —
Q1 2015
Shares 63 Value ($000) $2 Avg Close — Range —
Q4 2014
Shares 768 Value ($000) $25 Avg Close — Range —