| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Nantahala Capital Management, LLC | 5.9% | 1,654,470 | 0 | 1,654,470 | /s/ Taki Vasilakis | Taki Vasilakis / Chief Compliance Officer | |
| Wilmot B. Harkey | 5.9% | 1,654,470 | 0 | 1,654,470 | /s/ Wilmot B. Harkey | Wilmot B. Harkey | |
| Daniel Mack | 6.1% | 1,682,688 | 28,218 | 1,654,470 | /s/ Daniel Mack | Daniel Mack |