EX-21.1 3 coll-20241231xex21d1.htm EX-21.1

Exhibit 21.1

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Subsidiaries of Collegium Pharmaceutical, Inc.

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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
Ironshore Therapeutics, Inc. | Cayman Islands
Ironshore Pharmaceuticals & Development, Inc. | Cayman Islands
Ironshore Pharmaceuticals Inc. | Delaware
Ironshore Pharmaceuticals Canada Inc. | Canada
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