VOLCANO CORPORATION

CUSIP: 928645100 Class: CMN

Stephens Investment Management Group LLC's Holding History (CIK: 0001314440)

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

Q1 2014
Shares 459,470 Value ($000) $9,056 Avg Close — Range —
Q4 2013
Shares 547,170 Value ($000) $11,956 Avg Close — Range —
Q3 2013
Shares 564,375 Value ($000) $13,500 Avg Close — Range —
Q2 2013
Shares 367,515 Value ($000) $6,663 Avg Close — Range —