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EX-21.1 5 coll-20231231xex21d1.htm EX-21.1 COLLEGIUM PHARMACEUTICAL, INC - Subsidiaries of Collegium Pharmaceutical, Inc.

Exhibit 21.1

Subsidiaries of Collegium Pharmaceutical, Inc.

Subsidiary

Jurisdiction of Incorporation

Collegium Securities Corporation

Massachusetts

Collegium NF, LLC

Delaware

BioDelivery Sciences International, Inc.

Delaware

Arius Pharmaceuticals, Inc.

Delaware

Arius Two, Inc.

Delaware