| No. | Hedge Fund | Shares | Value | Activity | % Port |
|---|---|---|---|---|---|
| 1. | Caligan Partners David Johnson | 7,967,207 | $31,072,107 | 1.46% | |
| 2. | Vivo Capital Albert Cha And Frank Kung | 7,299,909 | $28,469,645 | -37% | 2.6% |
| 3. | Perceptive Advisors Joseph Edelman | 6,627,501 | $25,847,254 | +4% | 0.39% |
| 4. | Adage Capital Management Phill Gross And Robert Atchinson | 6,405,553 | $24,981,657 | +89% | 0.04% |
| 5. | RA Capital Management Peter Kolchinsky | 4,401,500 | $17,165,850 | 0.15% |