| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| ORBIMED ADVISORS LLC | 2.6% | 2,530,638 | 0 | 2,530,638 | /s/ Carl L. Gordon | Carl L. Gordon/Member | |
| ORBIMED CAPITAL LLC | 3.6% | 3,437,813 | 3,437,813 | 0 | /s/ Carl L. Gordon | Carl L. Gordon/Member |