| 26 Jan 2007 |
| 14159 capital (GP), LLC |
| 10 percent owner |
| P-Purchase |
| Acquired |
| 1,164 |
| $6.00 |
| 26 Jan 2007 | 14159 capital (GP), LLC | 10 percent owner | P-Purchase | Acquired | 388 | $5.98 |
| 26 Jan 2007 | Baker Brothers Life Sciences Capital (GP), LLC | 10 percent owner | P-Purchase | Acquired | 35,469 | $6.00 |
| 26 Jan 2007 | Baker Brothers Life Sciences Capital (GP), LLC | 10 percent owner | P-Purchase | Acquired | 11,847 | $5.98 |
| 11 Jan 2007 | Baker Biotech Capital (GP), LLC | 10 percent owner | P-Purchase | Acquired | 20,347 | $5.28 |
| 11 Jan 2007 | Baker Biotech Capital (GP), LLC | 10 percent owner | P-Purchase | Acquired | 6,351 | $4.83 |