| Legal Name of Subsidiary | Jurisdiction of Organization | |||||||
| Zeno Management, Inc. | Delaware | |||||||
| Zeno Pharmaceuticals, Inc. | Delaware | |||||||
| Zeno Alpha, Inc. | Delaware | |||||||
| K-Group Alpha, Inc. | Delaware | |||||||
| K-Group Beta, Inc. | Delaware | |||||||
| Zentalis Pharmaceuticals Australia Pty Ltd. | Australia | |||||||