THORATEC CORP

CUSIP: 885175307 Class: COM NEW

COMERICA BANK's Holding History (CIK: 0000901541)

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

Q3 2015
Shares 37,902 Value ($000) $2,398 Avg Close — Range —
Q2 2015
Shares 74,738 Value ($000) $3,332 Avg Close — Range —
Q1 2015
Shares 37,283 Value ($000) $1,562 Avg Close — Range —
Q4 2014
Shares 76,340 Value ($000) $2,478 Avg Close — Range —
Q3 2014
Shares 40,223 Value ($000) $1,075 Avg Close — Range —
Q2 2014
Shares 40,643 Value ($000) $1,417 Avg Close — Range —
Q1 2014
Shares 45,132 Value ($000) $1,616 Avg Close — Range —
Q4 2013
Shares 44,716 Value ($000) $1,637 Avg Close — Range —
Q3 2013
Shares 46,566 Value ($000) $1,736 Avg Close — Range —
Q2 2013
Shares 45,954 Value ($000) $1,439 Avg Close — Range —