| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| WuXi PharmaTech Healthcare Fund I L.P. | 7% | 4,121,815 | 0 | 4,121,815 | /s/ Ming Shi | Ming Shi, Director | |
| WuXi AppTec Co., Ltd. | 7% | 4,121,815 | 0 | 4,121,815 | /s/ Ming Shi | Ming Shi, Director |