| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Hudson Executive Capital LP | 13% | 9,319,372 | 48,678 | 9,270,694 | /s/ Douglas L. Braunstein | Douglas L. Braunstein, Managing Member | 0001652522 |
| HEC Management GP LLC | 13% | 9,319,372 | 0 | 9,319,372 | /s/ Douglas L. Braunstein | Douglas L. Braunstein, Managing Member | |
| Douglas L. Braunstein | 13% | 9,339,584 | 20,212 | 9,319,372 | /s/ Douglas L. Braunstein | Douglas L. Braunstein |