Advent Technologies Holdings, Inc. (Nasdaq: ADN) is a clean-energy company specializing in high-temperature proton exchange membrane fuel cell technology, with applications spanning hydrogen power generation and defense markets. The company entered the public markets through a de-SPAC merger with AMCI Acquisition Corp., a blank-check vehicle sponsored by AMCI Management LLC that completed its IPO in 2019. The business combination closed in February 2021, establishing the combined company under the ADN ticker on Nasdaq. The 10-Q filing dated May 2020 was submitted during the pre-merger period, covering operations of the SPAC entity. ADN operates in the alternative energy and fuel cell sector. Sign up at SpacDesk for full filing timelines, sponsor data, and deal analytics on ADN and hundreds of other SPAC transactions.