Marc Sieberger

Karstadt AG operates department and specialty stores in Germany. The company is headquartered in Essen, Germany.

Tengelmann Ventures GmbH (Tengelmann Ventures) is the venture capital subsidiary of Tengelmann Ventures Management GmbH, itself a wholly-owned subsidiary of Tengelmann Warenhandelsgesellschaft KG in Germany. Established in 2009, the firm is based in Mülheim an der Ruhr and focuses on e-commerce and information technology businesses.

Intelligent Apps GmbH engages in the development of smart phone applications with focus on the passenger transportation and management sector. The firm designs mobile applications that provide users access to taxi booking and transportation services. Its solution areas encompass online taxi booking and reservation, payment processing, direct customer booking, business tours, hotel pick-up service, and employee transportation. The company offers solutions to residential clients, taxi drivers, hotels, and businesses. Intelligent Apps was founded by Jan-Niclaus Mewes and Sven Johannes Külper in June 2009 and is headquartered in Hamburg, Germany.

Tengelmann Ventures Management GmbH (TEV) is a venture capital subsidiary of Tengelmann Twenty-One KG, founded in 2009. The firm is headquartered in Essen, Germany.

Scanbot SDK GmbH provides digital solutions for communication, music, videos, notes, and tasks. Its doo is the first product embracing all aspects of a pure digital documents life. The company was founded by Frank Thelen, Marc Sieberger and Alex Koch on May 15, 2011 and is headquartered in Bonn, Germany.

Lilium GmbH manufactures vertical take-off and landing (VTOL) aircrafts. The company was founded by Patrick Nathen, Matthias Meiner, Sebastian Born, and Daniel Wiegand in February 2015 and is headquartered in Gilching, Germany.

CAM Eisenholding GmbH & Co. KG provides investment services. The private company is based in Stadtallendorf, Germany. The CEO of the German company is Christian Winter.

10xDNA Capital Partners GmbH provides a tech-based building block for your stock portfolio. The private company is based in Bonn, Germany. The German company offers actively managed funds consisting of the most promising and innovative investments. The company was founded in 2021 by Frank Thelen and Jens Giersberg. Frank Thelen has been the CEO since 2021.