| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Kingdon Capital Management, L.L.C. | 7.1% | 1.36M | 0 | 1.36M | /s/ Richard Weinstein | Richard Weinstein/Chief Operating Officer & General Counsel | |
| M. Kingdon Offshore Master Fund, L.P. | 6.6% | 1.27M | 0 | 1.27M | By: Kingdon GP, LLC, its general partner, By: /s/ Mark Kingdon | Mark Kingdon/Managing Member | |
| Kingdon GP, LLC | 6.6% | 1.27M | 0 | 1.27M | /s/ Mark Kingdon | Mark Kingdon/Managing Member | |
| Mark Kingdon | 7.1% | 1.36M | 0 | 1.36M | /s/ Mark Kingdon | Mark Kingdon |