VOLCANO CORPORATION

CUSIP: 928645100 Class: CMN

HighTower Advisors, LLC's Holding History (CIK: 0001462245)

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

Q4 2014
Shares 11,800 Value ($000) $211 Avg Close — Range —
Q3 2014
Shares 11,800 Value ($000) $126 Avg Close — Range —
Q2 2014
Shares 19,800 Value ($000) $349 Avg Close — Range —
Q1 2014
Shares 11,800 Value ($000) $233 Avg Close — Range —