Advent Technologies Holdings, Inc. (Nasdaq: ADN) is a clean-energy technology company focused on the development and commercialization of hydrogen fuel cell components and systems. The company completed its business combination with AMCI Acquisition Corp., a SPAC sponsored by AMCI Group, in February 2021, bringing the combined entity to Nasdaq under the ADN ticker. The April 2022 S-1 filing represents a post-merger securities registration, reflecting the company's ongoing capital markets activity following its deSPAC debut. Advent operates across the fuel cell and broader clean-hydrogen sector, with research and manufacturing facilities in the United States and Europe. Visit SpacDesk and sign up for full filing history, deal metrics, and sponsor data on Advent Technologies and hundreds of other SPAC transactions.