| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| HEC Management GP LLC | 11% | 18,980,600 | 0 | 18,980,600 | /s/ Douglas L. Braunstein | Douglas L. Braunstein, Managing Member | |
| Hudson Executive Capital LP | 11% | 18,980,600 | 0 | 18,980,600 | /s/ Douglas L. Braunstein | Douglas L. Braunstein, Managing Member | 0001652522 |
| HEC Master Fund LP | 11% | 18,980,600 | 0 | 18,980,600 | /s/ Douglas L. Braunstein | Douglas L. Braunstein, Investment Manager | |
| Douglas L. Braunstein | 15% | 26,259,940 | 7,279,340 | 18,980,600 | /s/ Douglas L. Braunstein | Douglas L. Braunstein |