VOLCANO CORPORATION

CUSIP: 928645AA8 Class: CNV

CAMDEN ASSET MANAGEMENT L P /CA's Holding History (CIK: 0000903944)

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

Q4 2014
Shares 6,009,000 Value ($000) $5,994 Avg Close — Range —
Q3 2014
Shares 6,009,000 Value ($000) $5,964 Avg Close — Range —
Q2 2014
Shares 6,009,000 Value ($000) $6,050 Avg Close — Range —
Q1 2014
Shares 7,509,000 Value ($000) $7,584 Avg Close — Range —
Q4 2013
Shares 7,509,000 Value ($000) $7,889 Avg Close — Range —
Q3 2013
Shares 7,509,000 Value ($000) $8,114 Avg Close — Range —
Q2 2013
Shares 8,284,000 Value ($000) $8,217 Avg Close — Range —