| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Merck & Co., Inc. | 20% | 63,004,142 | 0 | 63,004,142 | /s/ Kelly Grez | Kelly Grez/Corporate Secretary | |
| Merck Sharp & Dohme LLC | 20% | 63,004,142 | 0 | 63,004,142 | /s/ Jon Filderman | Jon Filderman/Vice President | |
| Merck Global Health Innovation Fund, LLC | 20% | 63,004,142 | 0 | 63,004,142 | /s/ William Taranto | William Taranto/President & General Partner |