THORATEC CORP

CUSIP: 885175307 Class: COM NEW

TOCQUEVILLE ASSET MANAGEMENT L.P.'s Holding History (CIK: 0000883961)

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

Q1 2015
Shares 17,500 Value ($000) $733 Avg Close — Range —
Q4 2014
Shares 25,000 Value ($000) $812 Avg Close — Range —
Q3 2014
Shares 25,000 Value ($000) $668 Avg Close — Range —
Q2 2014
Shares 19,000 Value ($000) $662 Avg Close — Range —
Q1 2014
Shares 12,000 Value ($000) $430 Avg Close — Range —
Q4 2013
Shares 10,000 Value ($000) $366 Avg Close — Range —
Q3 2013
Shares 10,000 Value ($000) $373 Avg Close — Range —
Q2 2013
Shares 80,761 Value ($000) $2,529 Avg Close — Range —