| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Fairmount Funds Management LLC | 5.5% | 1,671,484 | 0 | 1,671,484 | /s/ Peter Harwin | Peter Harwin, Managing Member | |
| Fairmount Healthcare Fund II L.P. | 5.5% | 1,671,484 | 0 | 1,671,484 | /s/ Peter Harwin | Peter Harwin, Managing Member | |
| Peter Harwin | 5.5% | 1,671,484 | 0 | 1,671,484 | /s/ Peter Harwin | Peter Harwin | |
| Tomas Kiselak | 5.5% | 1,671,484 | 0 | 1,671,484 | /s/ Tomas Kiselak | Tomas Kiselak |