Exhibit 21.1
The following is a list of subsidiaries of the Company as of December 31, 2018:
| Subsidiary Legal Name | 
 | State or other Jurisdiction of Incorporation or Organization | 
| Atara Biotherapeutics Australia Pty. Ltd. | 
 | Australia | 
| Atara Biotherapeutics Ireland Limited Atara Biotherapeutics Switzerland GmbH | 
 | Ireland Switzerland |