| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| RTW Investments, LP | 4.9% | 3M | 0 | 3M | /s/ Roderick Wong, M.D | Roderick Wong, M.D., Managing Partner | |
| Roderick Wong, M.D. | 4.9% | 3M | 0 | 3M | /s/ Roderick Wong, M.D | Roderick Wong, M.D |