| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Casdin Capital, LLC | 8.7% | 1,295,361 | 0 | 1,295,361 | By: /s/ Eli Casdin | Eli Casdin / Managing Member | |
| Casdin Partners Master Fund, L.P. | 7.2% | 1,075,000 | 0 | 1,075,000 | By: /s/ Eli Casdin | Eli Casdin / Managing Member of its General Partner | |
| Casdin Partners GP, LLC | 7.2% | 1,075,000 | 0 | 1,075,000 | By: /s/ Eli Casdin | Eli Casdin / Managing Member | |
| Eli Casdin | 8.7% | 1,295,361 | 0 | 1,295,361 | By: /s/ Eli Casdin | Eli Casdin |