| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Ardsley Advisory Partners LP | 7.8% | 10,750,000 | 0 | 10,750,000 | /s/ Steve Napoli | Steve Napoli/ Member | |
| Ardsley Advisory Partners GP LLC | 7.8% | 10,750,000 | 0 | 10,750,000 | /s/ Steve Napoli | Steve Napoli/ Member | |
| Ardsley Partners I GP LLC | 7.8% | 10,750,000 | 0 | 10,750,000 | /s/ Steve Napoli | Steve Napoli/ Member | |
| Ardsley Partners Advanced Healthcare Fund, L.P. | 6.7% | 9,229,100 | 0 | 9,229,100 | /s/ Steve Napoli | Steve Napoli/ Member | |
| Ardsley Partners Fund II, L.P. | 1.1% | 1,520,900 | 0 | 1,520,900 | /s/ Steve Napoli | Steve Napoli/ Member | |
| Philip J. Hempleman | 7.8% | 10,750,000 | 0 | 10,750,000 | /s/ Steve Napoli* | Steve Napoli/Attorney-in Fact for Philip J. Hempleman |