| Name | Hold | Shares | Value | Type |
|---|---|---|---|---|
| Alan L. Crane | 35.97% | 4,848,940 | $10.33M | Insider |
| Polaris Venture Management Co V LLC | 24.20% | 3,262,437 | $6.95M | Insider |
| Venrock Associates V LP | 22.37% | 3,015,017 | $6.42M | Insider |
| Cvf LLC | 19.23% | 2,592,577 | $5.52M | Insider |
| Lilly Co Eli | 17.48% | 2,356,227 | $5.02M | Insider |
| Steven Edward Hall | 17.48% | 2,356,227 | $5.02M | Insider |
| Roger Hawley | 11.69% | 1,575,367 | $3.36M | Insider |
| Polaris Venture Management Co IV LLC | 10.62% | 1,432,101 | $3.05M | Insider |
| Sabrina Martucci Johnson | 7.14% | 962,062 | $2.05M | Insider |
| Lux Capital Management LLC | 7.06% | 951,999 | $2.03M | Insider |