| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Kingdon Capital Management, L.L.C. | 4.7% | 1.32M | 0 | 1.32M | By: /s/ Richard Weinstein | Richard Weinstein / Chief Operating Officer & General Counsel | |
| Mark Kingdon | 4.7% | 1.32M | 0 | 1.32M | By: /s/ Mark Kingdon | Mark Kingdon |