X0304 4 2012-02-03 0 0001354217 Volcano Corp VOLC 0001106621 LUSSIER MICHEL E C/O VOLCANO CORPORATION 3661 VALLEY CENTRE DRIVE, SUITE 200 SAN DIEGO CA 92130 0 1 0 0 Group President Common Stock 2012-02-03 4 M 0 5625 0 A 17647 D Common Stock 2012-02-05 4 M 0 3585 0 A 21232 D Common Stock 2012-02-06 4 S 0 2009 28.786 D 19223 D Common Stock 2012-02-07 4 S 0 1359 28.30 D 17864 D Restricted Stock Units 0 2012-02-03 4 M 0 5625 0 D Common Stock 5625 5625 D Restricted Stock Units 0 2012-02-05 4 M 0 3585 0 D Common Stock 3585 7170 D Pursuant to an instruction that complies with the provisions of Rule 10b5-1. The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $28.28 to $28.33, inclusive. The reporting person undertakes to provide to Volcano Corporation, any security holder of Volcano Corporation, or staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) of this Form 4. Remaining restricted units vest on 2/3/2013, contingent upon continuous service. 1/2 of the remaining restricted units vest on 2/5/2013 and 2/5/2014, contingent upion continuous service. /s/ Darin Lippoldt, Attorney-in-Fact 2012-02-07