Alliqua BioMedical Inc. said May 11 that COO Bradford Barton and Chief Strategy and Marketing Officer Pellegrino Pionati stepped down, both effective May 15.

The changes are in connection with the closing of Alliqua's sale of assets to Celularity Inc.

Yardley, Pa.-based Alliqua BioMedical sells regenerative medical products that help the body repair or replace soft tissue.