EQS-Adhoc: secunet Security Networks AG: Change in the Management Board

Publication of inside information pursuant to Article 17 MAR

Change in the Management Board of secunet Security Networks AG: Marc-Julian Siewert to become new Chairman of the Management Board; Axel Deininger's mandate will not be extended after 2025

[Essen / Germany, 26 March 2025] The Supervisory Board of secunet Security Networks AG (ISIN DE0007276503, WKN 727650) today resolved changes to the Management Board of secunet Security Networks AG: The Supervisory Board and CEO Axel Deininger have agreed not to extend his contract beyond the regular expiry on December 31, 2025.

In light of the future expansion of the business, the Supervisory Board plans to appoint Marc-Julian Siewert to the Management Board from July 1, 2025. He is also the designated successor to the CEO.

Marc-Julian Siewert possesses long-standing experience in business with public authorities as CEO of the provider for identity solutions Veridos, a joint venture of Giesecke+Devrient and Bundesdruckerei group.

The Supervisory Board would like to take this opportunity to thank Axel Deininger for his consistently trusting and successful cooperation, particularly during the transformation of secunet's business model in recent years.

From 1st July 2025, the Management Board is therefore expected to consist of Axel Deininger (CEO), Torsten Henn, Dr. Kai Martius, Jessica Nospers and Marc-Julian Siewert.

Contact

Stephanie Kniep

Director Investor Relations

Tel: +49 201 5454-3426

E-Mail: investor.relations@secunet.com

secunet Security Networks AG

Kurfürstenstraße 58

45138 Essen

http://www.secunet.com

ISIN: DE0007276503

WKN: 727650

Listed: Regulated market in Frankfurt (Prime Standard); Regulated Unofficial Market in Berlin, Bremen, Düsseldorf, Hamburg, Hanover, Munich and Stuttgart

secunet - Protection for digital infrastructures

secunet is Germany's leading cybersecurity company. In an increasingly networked world, the company uses a combination of products and consulting to ensure resilient digital infrastructures and the highest possible level of protection for data, applications and digital identities. secunet specialises in areas where there are particular security requirements - such as cloud, IIoT, eGovernment and eHealth. With secunet's security solutions, companies can comply with the highest security standards in digitalisation projects and thus drive their digital transformation forward.

Over 1,000 experts strengthen the digital sovereignty of governments, companies and society. Its clients include federal ministries, more than 20 DAX-listed companies and other national and international organisations. The company was founded in 1997. It is listed in the Prime Standard of Deutsche Börse and generated revenue of around 407 million euros in 2024.

secunet is an IT security partner of the Federal Republic of Germany and a partner of the Alliance for Cyber Security.

Further information can be found at www.secunet.com

Disclaimer

This release contains forward-looking statements. Forward-looking statements are statements that are not historical facts; they include statements about our beliefs and expectations. Any statement in this release that expresses our intentions, beliefs, expectations or projections (and the assumptions underlying them) is a forward-looking statement. These statements are based on plans, estimates and forecasts that are currently available to the management of secunet Security Networks AG. Forward-looking statements therefore relate only to the date on which they are made. We assume no obligation to update such statements in the light of new information about future events.