| Dec 12, 08 | Aisling Capital II LP | 10 percent owner | Purchase | -- | 861.83K | -- | 861.83K |
| Dec 12, 08 | Aisling Capital II LP | 10 percent owner | Purchase | -- | 10.41K | -- | 10.41K |
| Dec 12, 08 | Aisling Capital II LP | 10 percent owner | Purchase | -- | 1 | -- | 2 |
| Dec 12, 08 | Aisling Capital II LP | 10 percent owner | Purchase | -- | 1 | -- | 1 |
| Dec 12, 08 | Aisling Capital II LP | 10 percent owner | Sale | -- | 1 | -- | -- |
| Dec 12, 08 | Aisling Capital II LP | 10 percent owner | Sale | -- | 10.00K | -- | -- |
| Jul 17, 07 | TULLIS DICKERSON CAPITAL FOCUS III, L.P. | 10 percent owner | Purchase | $1.39 | 148.21K | $206.25K | 568.65K |
| Apr 16, 07 | TULLIS DICKERSON CAPITAL FOCUS III, L.P. | 10 percent owner | Purchase | $1.69 | 122.27K | $206.25K | 420.44K |
| Jan 30, 07 | TULLIS DICKERSON CAPITAL FOCUS III, L.P. | 10 percent owner | Purchase | $2.19 | 94.03K | $206.25K | 298.16K |
| Oct 13, 06 | TULLIS DICKERSON CAPITAL FOCUS III, L.P. | 10 percent owner | Purchase | $1.46 | 141.04K | $206.25K | 204.13K |
| Aug 8, 06 | TULLIS DICKERSON CAPITAL FOCUS III, L.P. | 10 percent owner | Purchase | $1.24 | 63.09K | $77.92K | 63.09K |
| Feb 28, 08 | TULLIS DICKERSON CAPITAL FOCUS III, L.P. | 10 percent owner | Purchase | $0.95 | 10.41K | $9.89K | 10.53M |
| Feb 28, 08 | TULLIS DICKERSON CAPITAL FOCUS III, L.P. | 10 percent owner | Purchase | $0.95 | 2.28M | $2.17M | 2.28M |
| Feb 28, 08 | TULLIS DICKERSON CAPITAL FOCUS III, L.P. | 10 percent owner | Purchase | $0.95 | 877.19K | $833.33K | 877.19K |
| Feb 28, 08 | TULLIS DICKERSON CAPITAL FOCUS III, L.P. | 10 percent owner | Purchase | $0.95 | 307.02K | $291.67K | 307.02K |
| Feb 28, 08 | TULLIS DICKERSON CAPITAL FOCUS III, L.P. | 10 percent owner | Sale | $1.64 | 2.28M | $3.74M | -- |
| Feb 28, 08 | TULLIS DICKERSON CAPITAL FOCUS III, L.P. | 10 percent owner | Sale | $1.53 | 10.00K | $15.34K | -- |
| Nov 8, 07 | Aisling Capital II LP | other: See Footnote 1 | Sale | -- | -- | -- | 548.32K |
| Nov 8, 07 | Aisling Capital II LP | other: See Footnote 1 | Sale | $1.53 | 4.47M | $6.86M | -- |
| Nov 8, 07 | Aisling Capital II LP | other: See Footnote 1 | Sale | $1.64 | 2.28M | $3.74M | -- |
| May 26, 06 | TULLIS DICKERSON CAPITAL FOCUS III, L.P. | 10 percent owner | Sale | $1.53 | 6.52M | $10.00M | -- |
| May 26, 06 | TULLIS DICKERSON CAPITAL FOCUS III, L.P. | 10 percent owner | Sale | $1.64 | 2.28M | $3.74M | -- |