THORATEC CORP

CUSIP: 885175307 Class: COM NEW

Columbia Asset Management's Holding History (CIK: 0001585047)

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

Q3 2015
Shares 5,000 Value ($000) $316 Avg Close — Range —
Q2 2015
Shares 5,000 Value ($000) $222 Avg Close — Range —
Q1 2015
Shares 5,000 Value ($000) $209 Avg Close — Range —