THORATEC CORP

CUSIP: 885175307 Class: COM NEW

MUFG Americas Holdings Corp's Holding History (CIK: 0001011659)

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

Q4 2011
Shares 4,400 Value ($000) $148 Avg Close — Range —
Q3 2011
Shares 4,400 Value ($000) $144 Avg Close — Range —
Q2 2011
Shares 3,400 Value ($000) $112 Avg Close — Range —
Q1 2011
Shares 3,400 Value ($000) $88 Avg Close — Range —
Q4 2010
Shares 3,400 Value ($000) $96 Avg Close — Range —