| 9-Mar-09 | Officer | FRIEDMAN PAUL A | Purchase at $2.10 per share. | D | 9,400 |
| 6-Mar-09 | Officer | FRIEDMAN PAUL A | Purchase at $2.10 per share. | D | 10,600 |
| 5-Mar-09 | Officer | FRIEDMAN PAUL A | Purchase at $2.20 per share. | D | 8,840 |
| 5-Mar-09 | Director | 14159 CAPITAL (GP), LLC | Purchase at $2.16 per share. | I | 312 |
| 5-Mar-09 | Director | BAKER BROTHERS LIFE SCIENCES CAPITAL (GP), LLC | Purchase at $2.16 per share. | I | 11,232 |
| 5-Mar-09 | Director | BAKER / TISCH CAPITAL (GP), LLC | Purchase at $2.16 per share. | I | 64 |
| 5-Mar-09 | Director | BAKER BROS. CAPITAL (GP), LLC | Purchase at $2.16 per share. | I | 5 |
| 5-Mar-09 | Director | BAKER BIOTECH CAPITAL (GP), LLC | Purchase at $2.16 per share. | I | 1,248 |
| 3-Mar-09 | Officer | FRIEDMAN PAUL A | Purchase at $2.20 per share. | D | 11,160 |
| 3-Mar-09 | Director | 14159 CAPITAL (GP), LLC | Purchase at $2.14 per share. | I | 264 |
| 3-Mar-09 | Director | BAKER BROTHERS LIFE SCIENCES CAPITAL (GP), LLC | Purchase at $2.14 per share. | I | 9,524 |
| 3-Mar-09 | Director | BAKER / TISCH CAPITAL (GP), LLC | Purchase at $2.14 per share. | I | 98 |
| 3-Mar-09 | Director | BAKER BROS. CAPITAL (GP), LLC | Purchase at $2.14 per share. | I | 5 |
| 3-Mar-09 | Director | BAKER BIOTECH CAPITAL (GP), LLC | Purchase at $2.14 per share. | I | 2,199 |
| 2-Mar-09 | Director | 14159 CAPITAL (GP), LLC | Purchase at $2.14 - $2.17 per share. | I | 9272 |