| Individual/Entity | Most Recent Trans. | Shares Owned as of Trans. Date | BAVP, L.P. Beneficial Owner (10% or more) | Purchase 8-Jul-09 | 2,492,220 8-Jul-09 | BOXER CAPITAL, LLC Other | Sale 26-Aug-09 | 876,489 26-Aug-09 | COBB TERRELL Director | Acquisition (Non Open Market) 31-Dec-09 | 59,479 31-Dec-09 | DORSEY BRIAN Officer | Automatic Sale 31-Dec-09 | 49,712 31-Dec-09 | DUBE SUSAN Officer | Acquisition (Non Open Market) 17-Feb-09 | 76,386 17-Feb-09 | EAGLE MICHAEL L Director | Acquisition (Non Open Market) 31-Dec-09 | 60,640 31-Dec-09 | EMSTER KURT VON Director | Acquisition (Non Open Market) 31-Dec-09 | 94,486 31-Dec-09 | EVNIN LUKE Beneficial Owner (10% or more) | Purchase 8-Jul-09 | 4,632,562
8-Jul-09 | HALE DAVID F Director | Acquisition (Non Open Market) 31-Dec-09 | 272,805 31-Dec-09 | JOCHELSON PHILIP Officer | Acquisition (Non Open Market) 28-Nov-08 | 52,500 28-Nov-08 | JONES ROBERT LEWIS Officer | Acquisition (Non Open Market) 17-Feb-09 | 65,429 17-Feb-09 | LITALIEN JAMES J Officer | Acquisition (Non Open Market) 17-Feb-09 | 64,164 17-Feb-09 | MAST ERLE T Director | Acquisition (Non Open Market) 31-Dec-09 | 65,096 31-Dec-09 | MCGILLEY MEG Officer | Acquisition (Non Open Market) 17-Feb-09 | 74,721 17-Feb-09 | MONTREUX EQUITY PARTNERS II SBIC LP Beneficial Owner (10% or more) | Acquisition (Non Open Market) 8-Jul-09 | 2,195,505 8-Jul-09 | MPM BIOVENTURES III-QP L.P. Beneficial Owner (10% or more) | Purchase 8-Jul-09 | 4,632,562
8-Jul-09 | ONAITIS MATTHEW Officer | Automatic Sale 31-Dec-09 | 50,712 31-Dec-09 | PASCOE RICHARD W Officer | Automatic Sale 31-Dec-09 | 52,000 31-Dec-09 | RASER JEFFREY Officer | Automatic Sale 22-Jan-10 | 47,500 22-Jan-10 | TREU JESSE I Director | Acquisition (Non Open Market) 31-Dec-09 | 52,318 31-Dec-09 | WHEELER KURT Director | Acquisition (Non Open Market) 31-Dec-09 | 4,689,939 31-Dec-09 | WIGGANS THOMAS G Director | Acquisition (Non Open Market) 31-Dec-09 | 55,232 31-Dec-09 |
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