| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Camber Capital Management LP | 8.5% | 17,168,525 | 0 | 17,168,525 | /s/ Sean George | Sean George, Chief Financial Officer | |
| Stephen DuBois | 8.5% | 17,168,525 | 0 | 17,168,525 | /s/ Sean George | Sean George, Chief Financial Officer |