NAME OF SUBSIDIARY

JURISDICTION OF INCORPORATION

Acadia Pharma Limited

England and Wales

Acadia Pharmaceuticals A/S

Denmark

Acadia Pharmaceuticals GmbH

Acadia Pharmaceuticals Holdings Inc.

Acadia Pharmaceuticals (Canada) Inc.

Switzerland

Delaware

Ontario, Canada

Acadia Pharmaceuticals (France) SAS

France

Acadia Pharmaceuticals (Germany) GmbH

Germany

Acadia Pharmaceuticals (Italy) S.R.L.

Italy

Acadia Pharmaceuticals (Netherlands) B.V.

Netherlands

Amorsa Therapeutics Inc.

Massachusetts

CerSci Therapeutics Incorporated

Delaware

Levo Therapeutics, Inc.

Delaware

Pandeia Therapeutics Limited

England and Wales