| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| EcoR1 Capital, LLC | 14.9% | 5.73M | 0 | 5.73M | /s/ Oleg Nodelman | Manager | |
| Oleg Nodelman | 14.9% | 5.73M | 0 | 5.73M | /s/ Oleg Nodelman | Reporting person | |
| EcoR1 Capital Fund Qualified, L.P. | 14% | 5.37M | 0 | 5.37M | /s/ Oleg Nodelman | Manager of the General Partner, EcoR1 Capital, LLC |