Advent Technologies Holdings, Inc. (Nasdaq: ADN) is a clean-energy company specializing in high-temperature proton-exchange-membrane fuel cell technology, with applications spanning stationary power, defense, and maritime sectors. The company went public in February 2021 through a merger with AMCI Acquisition Corp., a blank-check vehicle sponsored by AMCI Group, which completed its IPO in 2019. By the time of its June 2022 8-K filing, Advent Technologies was operating as a fully public entity following the de-SPAC transaction. The company is headquartered in Boston, Massachusetts, and maintains research and manufacturing operations in the United States, Denmark, and Greece. Sign up at SpacDesk for full filing history, shareholder activity, and deal analytics on Advent Technologies and hundreds of other SPAC transactions.