VOLCANO CORPORATION

CUSIP: 928645100 Class: CMN

COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS's Holding History (CIK: 0001083190)

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

Q4 2014
Shares 694,444 Value ($000) $12,417 Avg Close — Range —
Q3 2013
Shares 30,700 Value ($000) $735 Avg Close — Range —