VOLCANO CORPORATION

CUSIP: 928645100 Class: CMN

STATE OF WISCONSIN INVESTMENT BOARD's Holding History (CIK: 0000854157)

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

Q3 2014
Shares 54,071 Value ($000) $575 Avg Close — Range —
Q2 2014
Shares 344,071 Value ($000) $6,059 Avg Close — Range —
Q1 2014
Shares 344,071 Value ($000) $6,782 Avg Close — Range —
Q4 2013
Shares 521,116 Value ($000) $11,386 Avg Close — Range —
Q3 2013
Shares 567,520 Value ($000) $13,575 Avg Close — Range —
Q2 2013
Shares 586,453 Value ($000) $10,632 Avg Close — Range —