VOLCANO CORPORATION

CUSIP: 928645100 Class: CMN

Tower Research Capital LLC (TRC)'s Holding History (CIK: 0001533421)

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

Q4 2014
Shares 112 Value ($000) $2 Avg Close — Range —
Q3 2014
Shares 4,744 Value ($000) $51 Avg Close — Range —
Q2 2014
Shares 629 Value ($000) $11 Avg Close — Range —
Q1 2014
Shares 4,188 Value ($000) $82 Avg Close — Range —
Q4 2013
Shares 1,438 Value ($000) $31 Avg Close — Range —
Q3 2013
Shares 3,595 Value ($000) $86 Avg Close — Range —
Q2 2013
Shares 285 Value ($000) $5 Avg Close — Range —