VOLCANO CORPORATION

CUSIP: 928645100 Class: CMN

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q3 2014
Shares 1,913,725 Value ($000) $20,362 Avg Close — Range —
Q2 2014
Shares 3,019,660 Value ($000) $53,176 Avg Close — Range —
Q1 2014
Shares 3,010,838 Value ($000) $59,344 Avg Close — Range —
Q4 2013
Shares 1,530,324 Value ($000) $33,437 Avg Close — Range —
Q3 2013
Shares 1,407,424 Value ($000) $33,666 Avg Close — Range —
Q2 2013
Shares 1,783,656 Value ($000) $32,337 Avg Close — Range —