| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| EW HEALTHCARE PARTNERS FUND 2, L.P. | 6.81% | 3.03M | 3.03M | 0 | /s/ Martin P. Sutter | Martin P. Sutter, Manager | |
| EW HEALTHCARE PARTNERS FUND 2-A, L.P. | 10.52% | 4.68M | 4.68M | 0 | /s/ Martin P. Sutter | Martin P. Sutter, Manager | |
| EW Healthcare Partners Fund 2 GP, L.P. | 17.32% | 7.71M | 7.71M | 0 | /s/ Martin P. Sutter | Martin P. Sutter, Manager | |
| EW Healthcare Partners Fund 2-UGP, LLC | 17.32% | 7.71M | 7.71M | 0 | /s/ Martin P. Sutter | Martin P. Sutter, Manager |