Advent Technologies Announces Membership in German Intelligent Mobility Association

Advent Technologies Holdings, Inc. (NASDAQ: ADN) (“Advent”) today announced
its membership in ITS mobility, the largest competence cluster for
intelligent mobility in Germany. The U.S. corporation develops cutting-edge
technologies allowing for an “Any Fuel. Anywhere.” option in which Advent’s
high-temperature fuel cells are not limited to exclusively using hydrogen as
a fuel source as they can convert hydrogen carriers and other e-fuels to
electricity.

Advent plays an active role in the automotive sector through its patented
high-temperature polymer electrolyte membrane (HT-PEM) technology. This
allows electric vehicles (EVs), from smaller vehicles requiring a charge of
15 kW or less to larger vehicles requiring above 30 kW, to continuously
recharge their batteries and refuel on a variety of zero-emissions liquid
fuels.

ITS mobility is a multi-branched, active network connecting business,
economic and science experts in projects and through professional events on
intelligent mobility concepts designed to create safer and more efficient
traffic and transportation. With more than 200 members and over 20 years of
experience, ITS mobility promotes dialogue between the mobility industry and
research community. The association’s focus includes automated and connected
driving, sustainable mobility concepts, intelligent infrastructures, new
drive technologies and energy sources, open data infrastructure,
mobility-as-a service (MaaS), artificial intelligence, new materials, eCall,
and positioning and navigation.

Dr. Vasilis Gregoriou, Advent Technologies Chairman and Chief Executive
Officer, said, “We are thrilled to be a member of ITS mobility and actively
contributing to this leading German network for the mobility industry and
researchers. We look forward to collaborating with ITS mobility and our
fellow members to help the hydrogen and fuel cell industries thrive while
remaining committed to playing our role in the clean energy transition
through the advancement of innovative, effective solutions.”

Thomas Krause, Chairman of the Board of ITS mobility, added: “We are excited
to have Advent Technologies as a member of ITS mobility. Their knowledge and
experience as an innovator in the fuel cell and hydrogen technology space
will be a valuable asset to our competence cluster.”

ITS mobility is a member of the go-cluster program, the cluster political
excellence measure of the Federal Ministry for Economic Affairs and Energy.
ITS has been awarded the silver label for Cluster Management Excellence by
the European Secretariat for Cluster Analysis (ESCA).

About Advent Technologies Holdings, Inc.

Advent Technologies Holdings, Inc. is a U.S. corporation that develops,
manufactures, and assembles critical components for fuel cells and advanced
energy systems in the renewable energy sector. Advent is headquartered in
Boston, Massachusetts, with offices in the San Francisco Bay Area and
Europe. With 120-plus patents issued (or pending) for its fuel cell
technology, Advent holds the IP for next-generation high-temperature proton
exchange membranes (HT-PEM) that enable various fuels to function at high
temperatures under extreme conditions – offering a flexible “Any Fuel.
Anywhere.” option for the automotive, maritime, aviation, and power
generation sectors. For more information, visit www.advent.energy.