| Individual/Entity | Most Recent Trans. | Shares Owned as of Trans. Date | BASSO ROBERT S Director | Purchase 3-Apr-09 | 5,000 3-Apr-09 | CRAVES FRED B Director | Purchase 27-Mar-09 | 203,803 27-Mar-09 | DE JAGER ROBERT Officer | Ownership Statement 1-Feb-08 | 0 1-Feb-08 | EVNIN LUKE Beneficial Owner (10% or more) | Sale 9-Nov-09 | 6,363,249
9-Nov-09 | JACKSON MICHAEL K Officer | Disposition (Non Open Market) 25-Nov-09 | 4,005 25-Nov-09 | LOEWY CAROLINE M Officer | Purchase 6-Mar-08 | 30,000
6-Mar-08 | LYONS GARY A Director | Ownership Statement 7-Jul-09 | 0 7-Jul-09 | MCMAHON GERALD PHD Officer | Purchase 30-Dec-08 | 19,608 30-Dec-08 | MPM BIOVENTURES III LLC Beneficial Owner (10% or more) | Sale 9-Nov-09 | 6,363,249
9-Nov-09 | SIMON NICHOLAS J III Director | Sale 9-Nov-09 | 6,363,249
9-Nov-09 | STEVENS DAVID R Director | Purchase 9-Jan-09 | 19,818 9-Jan-09 | WEAVER GREGORY L Officer | Purchase 21-Aug-09 | 10,000 21-Aug-09 |
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