| No. | Hedge Fund | Shares | Value | Activity | % Port |
|---|---|---|---|---|---|
| 1. | Nantahala Capital Management Wilmot B. Harkey And Daniel Mack | 5,726,857 | $35,162,902 | +37% | 1.22% |
| 2. | Tang Capital Management Kevin C. Tang | 5,488,299 | $33,698,156 | +10% | 1.3% |
| 3. | Caligan Partners David Johnson | 4,138,943 | $25,413,110 | +24% | 3.33% |
| 4. | Millennium Management Israel Englander | 1,859,003 | $11,414,278 | +26% | 0% |
| 5. | Stonepine Capital Timothy P. Lynch | 1,536,391 | $9,433,441 | +68% | 7.67% |