THORATEC CORP

CUSIP: 885175307 Class: COM NEW

THOMPSON INVESTMENT MANAGEMENT, INC.'s Holding History (CIK: 0001277279)

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

Q2 2015
Shares 6,000 Value ($000) $267 Avg Close — Range —
Q1 2015
Shares 8,000 Value ($000) $335 Avg Close — Range —
Q4 2014
Shares 8,000 Value ($000) $260 Avg Close — Range —
Q3 2014
Shares 8,000 Value ($000) $217 Avg Close — Range —