| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Kingdon Capital Management, L.L.C. | 5.3% | 2,237,048 | 0 | 2,237,048 | By: /s/ Richard Weinstein | Richard Weinstein / Chief Operating Officer & General Counsel | |
| M. Kingdon Offshore Master Fund, L.P. | 4.7% | 1,982,491 | 0 | 1,982,491 | By: /s/ Mark Kingdon | Mark Kingdon / Managing Member | |
| Kingdon GP, LLC | 4.7% | 1,982,491 | 0 | 1,982,491 | By: /s/ Mark Kingdon | Mark Kingdon / Managing Member | |
| Mark Kingdon | 5.3% | 2,237,048 | 0 | 2,237,048 | By: /s/ Mark Kingdon | Mark Kingdon |