VOLCANO CORPORATION

CUSIP: 928645100 Class: CMN

SCHRODER INVESTMENT MANAGEMENT GROUP's Holding History (CIK: 0001086619)

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

Q1 2014
Shares 385,683 Value ($000) $7,601,812 Avg Close — Range —
Q4 2013
Shares 521,283 Value ($000) $11,390,034 Avg Close — Range —
Q3 2013
Shares 432,683 Value ($000) $10,362,758 Avg Close — Range —
Q2 2013
Shares 434,583 Value ($000) $7,878,990 Avg Close — Range —