| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| MHR INSTITUTIONAL PARTNERS III LP | 8.7% | 25,173,882 | 25,173,882 | 0 | /s/ Janet Yeung | Authorized Signatory | 0001277742 |
| MHR Institutional Advisors III LLC | 8.7% | 25,173,882 | 25,173,882 | 0 | /s/ Janet Yeung | Authorized Signatory | |
| MHR Fund Management LLC | 13% | 37,648,498 | 37,648,498 | 0 | /s/ Janet Yeung | Authorized Signatory | |
| MHR HOLDINGS LLC | 13% | 37,648,498 | 37,648,498 | 0 | /s/ Janet Yeung | Authorized Signatory | |
| Mark H. Rachesky, M.D. | 13% | 37,920,093 | 37,920,093 | 0 | /s/ Janet Yeung | Attorney-in-Fact |