| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| RANDAL J. KIRK | 38% | 141,519,399 | 141,519,399 | 0 | /s/ Randal J. Kirk | Randal J. Kirk | 0001091823 |
| R.J. KIRK DECLARATION OF TRUST | 27% | 98,831,434 | 98,831,434 | 0 | /s/ Randal J. Kirk | Randal J. Kirk Trustee | |
| THIRD SECURITY, LLC | 6.6% | 24,487,991 | 24,487,991 | 0 | /s/ Randal J. Kirk | Randal J. Kirk Managing Member |