Secunet Security Networks AG - Company Profile

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Secunet Security Networks AG: Executives

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The following section provides information on Secunet Security Networks AG’s senior management, executives, CEO and key decision makers and their roles in the organization. For more insight into Secunet Security Networks AG's management and employees, unlock the full data with our company analytics monitoring tool.

Executives

Marc-Julian Siewert

Chief Executive Officer Senior Management Since: 2025

Mr. Marc-Julian Siewert has been the Chief Executive officer of the company since July 2025. Prior to this, he was the Group Vice President and Head of Value Added Solutions and Services in Currency Technology division of Giesecke + Devrient GmbH in 2018. He also held various roles in Sales & Marketing in the same company. Earlier, he also worked in technology consulting before appointment as Vice President of Key Accounts at Papierfabrik Louisenthal GmbH in 2013.

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Jessica Nospers

Chief Financial Officer Senior Management Since: 2024

Ms. Jessica Nospers has been the Chief Financial Officer of the company since June 2024. Previously she served as the Group Director Finance at Hengst SE and Group Chief Financial Officer at fernao group GmbH. She began her professional career in 2004 at Deloitte in the Transaction Advisory Services division.

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Torsten Henn

Chief Operating Officer Senior Management Since: 2015

Mr. Torsten Henn has been the Chief Operating Officer of the company since 2015 and has been a member of the management Board since June .2019. Prior to this, he held many positions such as consultant, project manager at Secunet GmbH from 1997.

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Kai Martius

Chief Technology Officer Senior Management Since: 2015

Mr. Kai Martius has been the Chief Technology Officer of the company since 2015 and has been a member of the management Board since June .2019. Prior to this, he served as the Head of the High Security / Public Sector division from 2007 to 2015.He was appointed to the Management Board in 2019.

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Ralf Wintergerst

Chairman Non Executive Board

Mr. Ralf Wintergerst serves as the Chairman of the company. Currently, he has also serves as the Chairman and Chief Executive Officer of Giesecke+Devrient GmbH (G+D) since 2016. He also serves as a Director at various organizations including Veridos GmbH, Netcetera AG, and Cyber Defense Research Institute of the Bundeswehr University.

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