G+D Management Team

Ralf Wintergerst is Chairman of the Management Board of Giesecke+Devrient (G+D). In addition to his duties as Group CEO, he is responsible for the central areas of Corporate Strategy and Development, Mergers & Acquisitions, Corporate Communications, Compliance Management and Auditing, Data Privacy, and Legal and Corporate Governance. As the company's Labor Director, he is also responsible for Human Resources.

Wintergerst joined G+D in 1998 and has held various management positions in different business areas. Wintergerst has been a member of the Management Board since 2013 and was appointed Chairman of the Management Board and CEO of G+D in 2016.

Alongside his role at G+D, Wintergerst is President of the German digital association Bitkom with more than 2,200 member companies as well as Vice President of the Federation of German Industries (BDI). Furthermore, he is Chairman of the Supervisory Board of secunet Security Networks AG (Essen, Germany) and President of the Board of Directors of netcetera AG (Zurich, Switzerland).

Wintergerst studied business administration and holds two master’s degrees – one in management and the other in politics philosophy and economics (PPE). He earned his doctorate at Ludwig-Maximilians-Universität Munich with a thesis on corporate governance and management. 

Jan Thyen is a member of the Management Board of Giesecke+Devrient. As Group CFO, his responsibilities include financing, Group and investment controlling, accounting, treasury, taxes and customs, performance management, and property and infrastructure management.

Mr Thyen joined G+D in 2010 as Head of Mergers & Acquisitions and has since held various management positions within the company, most recently as Head of Strategy for the G+D Group. Before this, he took over responsibility as CFO of the G+D Mobile Security subgroup in 2017. Thyen was appointed Group CFO in May 2024.

Thyen studied business administration and has held senior management positions in various industries, including strategy, corporate finance, and M&A, as well as traditional CFO functions, since starting his career in 1999. 

Gabriel von Mitschke-Collande is a member of the Giesecke+Devrient management board. As Group Chief Digital Officer (CDO), he is responsible for digitalization, IT, technologies, and innovation, as well as environmental, social, and corporate governance (ESG). He is also responsible for Group and information security, IT, quality management, and G+D Ventures. 

Von Mitschke-Collande has successfully implemented digital transformation in various companies and management positions, for example, in the agricultural and energy sectors and in consulting. Von Mitschke-Collande most recently worked as CDO for BayWa AG in Munich. The Group CDO has been with G+D since May 2024. 

Gabriel von Mitschke-Collande's academic journey includes studying management and technology at RWTH Aachen University and TU Munich. He further honed his skills with a master's degree, focusing on mechanical engineering, innovation, and entrepreneurship. 

Wolfram Seidemann is CEO of the Giesecke+Devrient Currency Technology GmbH. He was appointed Group Executive Banknote at Giesecke+Devrient GmbH in November 2016. Prior to that, he was Chairman of the Management Board of Papierfabrik Louisenthal and Division Head Paper after having been responsible for Sales and Marketing of Banknote Processing Systems worldwide.

Seidemann joined G+D in 1999 as Head of International Research and Development Chipcard. He subsequently held various senior management positions at G+D subsidiaries, among them Managing Director Giesecke+Devrient Asia in Singapore, President of G+D Teco Taiwan, Taipei and Member of the Board Giesecke+Devrient India, New Delhi.

Before joining G+D, Seidemann worked for the Economics Department of the Technical University Munich as Head of R&D- and Innovation Management and as an industry consultant in this area. Seidemann studied Electrical Engineering and Business Administration, and holds a doctor’s degree in Innovations Management from the Technical University of Munich.

Gabrielle Bugat is CEO of the Giesecke+Devrient ePayments GmbH. She has a rich background in international business and many years of broad professional experience within the payments industry. Having started her career in product management at Schlumberger Smartcards (Axalto), in 2003 she took over the position of Technical Director for Latin America. In 2006, when Axalto became Gemalto, Ms. Bugat came back to France as Senior Vice President, and held various leadership positions in Product Management, R&D and Sales. In 2014 she took on heading the worldwide solution business for banking and payment at Gemalto, with managing director roles in several subsidiaries.

Ms. Bugat joined G+D in 2017 as Head of Sales and Marketing for payment cards and solutions. Subsequently she took over responsibility for the whole Business Unit, leading sales, operations, product and development. In addition to this, from January 2021 Ms. Bugat was assuming responsibility for the further development of G+D's investments across all aspects of digital payments, like recently with the Swiss software company Netcetera. Since January 2023, Gabrielle Bugat has been CEO of Giesecke+Devrient Mobile Security GmbH. From July 2023 she is CEO of the Giesecke+Devrient ePayments GmbH, which provides seamless physical and digital payment solutions for banks and fintechs.

Beyond her role at G+D, Ms. Bugat has also been engaged in the Board of Directors of her alma mater, the renowned university Mines ParisTech.

Philipp Schulte is CEO of Giesecke+Devrient Mobile Security, which provides customers with products and solutions in the area of connectivity and for the Internet of Things. Previously, Schulte served as CFO of the Mobile Security business sector since 2021 and until then led Corporate Strategy and Development for the G+D Group for five years. In addition to his role at G+D, Schulte is a member of the Board of Directors of netcetera AG (Zurich) since 2020.

Schulte worked for several years internationally as a management consultant for McKinsey & Company, particularly in the high-tech, automotive and telecom sectors. He holds a doctorate in economics from the Karlsruhe Institute of Technology and a master's degree in information and communication technology.

Marc-Julian Siewert is CEO of Veridos GmbH, a joint venture between Giesecke+Devrient and Bundesdruckerei. The company supplies governments and authorities with tailor-made complete solutions for secure identification. Governments and authorities in more than 100 countries trust into the integration and product know-how of Veridos. Marc-Julian joined G+D in 2013 as Regional Sales Director. From 2014 to 2016 he took over various key accounts worldwide and several strategic projects, and then managed the sales and marketing operations for G+D Currency Technology in the Middle East and Africa. From 2019 to 2021 Marc-Julian was COO and member of the management board of Veridos.

Before joining G+D, Marc-Julian gained critical experience in optimizing operations for various reputable companies in Europe and Southern Africa while working as a business and technology consultant in Zurich, Switzerland. Marc-Julian completed his studies of business and management in London, New York und Madrid and holds a Master’s degree in international management from IE Business School.

Since Januar 2018 Axel Deininger serves together with Thomas Pleines, Tosten Henn and Dr Kai Martius. 
He is specifically responsible for strategy/business development, international sales, marketing and human ressources at secunet Security Networks AG. Axel Deininger has been Chairman of the Board since June 2019.

Axel Deininger is an industrial engineer who possesses many years of management experience from holding positions at companies such as Siemens AG, Infineon Technologies AG and Samsung Semiconductor Europe GmbH. Most recently, Deininger held a variety of management positions during his more than ten years with Munich-based Giesecke+Devrient Group.