| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Vivo Capital IX, LLC | 4.5% | 292,743 | 292,743 | 0 | /s/ Frank Kung | Frank Kung/Managing Member | |
| Vivo Capital Fund IX, L.P. | 4.5% | 292,743 | 292,743 | 0 | /s/ Frank Kung | Frank Kung/Managing Member |