Name

Jurisdiction of Incorporation

atai Holdco, Inc.

Delaware

atai Life Sciences US, Inc.

Delaware

atai Life Sciences AG

Germany

atai Life Sciences UK Ltd

England and Wales

atai Therapeutics, Inc. (f.k.a. Viridia Life Sciences, Inc.)

Delaware

atai Therapeutics Holdings, Inc.

Delaware

EmpathBio, Inc.

Delaware

GABA Therapeutics, Inc.

Delaware

IntelGenx Corp.

Canada

Perception Neuroscience Holdings, Inc.

Delaware

PsyProtix, Inc.*

Delaware

Recognify Life Sciences, Inc.

Delaware