VOLCANO CORPORATION

CUSIP: 928645100 Class: CMN

PFM Health Sciences, LP's Holding History (CIK: 0001442756)

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

Q3 2013
Shares 585,302 Value ($000) $14,018 Avg Close — Range —
Q2 2013
Shares 1,269,133 Value ($000) $23,009 Avg Close — Range —
Q1 2013
Shares 175,861 Value ($000) $3,915 Avg Close — Range —