THORATEC CORP

CUSIP: 885175307 Class: COM NEW

EMERALD ADVISERS, LLC's Holding History (CIK: 0001015083)

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

Q2 2014
Shares 117,893 Value ($000) $4,110 Avg Close — Range —
Q1 2014
Shares 120,183 Value ($000) $4,304 Avg Close — Range —
Q4 2013
Shares 157,383 Value ($000) $5,760 Avg Close — Range —
Q3 2013
Shares 116,760 Value ($000) $4,354 Avg Close — Range —