VOLCANO CORPORATION

CUSIP: 928645AA8 Class: CNV

STEELHEAD PARTNERS LLC's Holding History (CIK: 0001133521)

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

Q4 2014
Shares 16,457,000 Value ($000) $16,436 Avg Close — Range —
Q3 2014
Shares 13,285,000 Value ($000) $13,086 Avg Close — Range —
Q2 2014
Shares 7,559,000 Value ($000) $7,597 Avg Close — Range —
Q1 2014
Shares 6,059,000 Value ($000) $6,180 Avg Close — Range —
Q4 2013
Shares 6,059,000 Value ($000) $6,392 Avg Close — Range —
Q3 2013
Shares 6,059,000 Value ($000) $6,574 Avg Close — Range —
Q2 2013
Shares 5,284,000 Value ($000) $5,264 Avg Close — Range —