| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Nantahala Capital Management, LLC | 8.4% | 2,359,141 | 0 | 2,359,141 | /s/ Taki Vasilakis | Taki Vasilakis / Chief Compliance Officer | |
| Wilmot B. Harkey | 8.4% | 2,359,141 | 0 | 2,359,141 | /s/ Wilmot B. Harkey | Wilmot B. Harkey | |
| Daniel Mack | 8.5% | 2,359,141 | 28,218 | 2,359,141 | /s/ Daniel Mack | Daniel Mack |