| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Deerfield Mgmt, L.P. | 5% | 2,927,013 | 0 | 2,927,013 | /s/ Jonathan Isler | Jonathan Isler, Attorney-In-Fact | |
| Deerfield Management Company, L.P. | 5% | 2,927,013 | 0 | 2,927,013 | /s/ Jonathan Isler | Jonathan Isler, Attorney-In-Fact | |
| Deerfield Partners, L.P. | 5% | 2,927,013 | 0 | 2,927,013 | /s/ Jonathan Isler | Jonathan Isler, Attorney-In-Fact | |
| James E. Flynn | 5% | 2,927,013 | 0 | 2,927,013 | /s/ Jonathan Isler | Jonathan Isler, Attorney-In-Fact |