| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| MHR INSTITUTIONAL PARTNERS III LP | 14% | 11,874,473 | 11,874,473 | 0 | /s/ Janet Yeung | Authorized Signatory | 0001391121 |
| MHR INSTITUTIONAL ADVISORS III LLC | 14% | 11,874,473 | 11,874,473 | 0 | /s/ Janet Yeung | Authorized Signatory | 0001391563 |
| MHR FUND MANAGEMENT LLC | 24% | 20,127,660 | 20,127,660 | 0 | /s/ Janet Yeung | Authorized Signatory | 0001277742 |
| MHR HOLDINGS LLC | 24% | 20,127,660 | 20,127,660 | 0 | /s/ Janet Yeung | Authorized Signatory | 0001552702 |
| MARK H. RACHESKY, M.D. | 24% | 20,233,455 | 20,233,455 | 0 | /s/ Janet Yeung | Attorney-in-Fact | 0001194368 |