| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Foresite Capital Fund VI LP | 5.1% | 3,135,120 | 3,135,120 | 0 | /s/ James Tananbaum | James Tananbaum, Managing Member of the General Partner | |
| Foresite Capital Management VI, LLC | 5.1% | 3,135,120 | 3,135,120 | 0 | /s/ James Tananbaum | James Tananbaum, Managing Member | |
| Tananbaum James B. | 5.1% | 3,135,120 | 3,135,120 | 0 | /s/ James Tananbaum | James Tananbaum |