THORATEC CORP

CUSIP: 885175307 Class: COM NEW

FRED ALGER MANAGEMENT, LLC's Holding History (CIK: 0000003520)

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

Q2 2014
Shares 545,910 Value ($000) $19,030 Avg Close — Range —
Q1 2014
Shares 637,136 Value ($000) $22,816 Avg Close — Range —
Q4 2013
Shares 656,767 Value ($000) $24,038 Avg Close — Range —
Q3 2013
Shares 750,279 Value ($000) $27,978 Avg Close — Range —
Q2 2013
Shares 536,132 Value ($000) $16,786 Avg Close — Range —