VOLCANO CORPORATION

CUSIP: 928645100 Class: CMN

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

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

Q4 2014
Shares 127,672 Value ($000) $2,283 Avg Close — Range —
Q3 2014
Shares 130,172 Value ($000) $1,385 Avg Close — Range —
Q2 2014
Shares 132,493 Value ($000) $2,333 Avg Close — Range —
Q1 2014
Shares 136,782 Value ($000) $2,696 Avg Close — Range —
Q4 2013
Shares 137,982 Value ($000) $3,015 Avg Close — Range —
Q3 2013
Shares 108,399 Value ($000) $2,593 Avg Close — Range —
Q2 2013
Shares 24,735 Value ($000) $448 Avg Close — Range —