| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Caligan Partners LP | 5.2% | 3.34M | 0 | 3.34M | /s/ David Johnson | David Johnson, Managing Partner | |
| David Johnson | 5.2% | 3.34M | 0 | 3.34M | /s/ David Johnson | David Johnson, Individually |