VOLCANO CORPORATION

CUSIP: 928645100 Class: CMN

NORTHERN TRUST CORP's Holding History (CIK: 0000073124)

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

Q4 2014
Shares 583,585 Value ($000) $10,435 Avg Close — Range —
Q3 2014
Shares 610,004 Value ($000) $6,490 Avg Close — Range —
Q2 2014
Shares 645,962 Value ($000) $11,375 Avg Close — Range —
Q1 2014
Shares 748,020 Value ($000) $14,744 Avg Close — Range —
Q4 2013
Shares 803,694 Value ($000) $17,560 Avg Close — Range —
Q3 2013
Shares 787,469 Value ($000) $18,860 Avg Close — Range —
Q2 2013
Shares 783,664 Value ($000) $14,208 Avg Close — Range —