Henri Kühnert

GfMB Gesellschaft für Mobiles Bezahlen mbH engages in the provision of telecommunications, information technology, payment transaction processing, and electronic engineering services. Its business activities also include trading in electronic goods. The company was founded in June 2007 and is headquartered in Hamburg, Germany.

PressMatrix GmbH provides digital publishing services. It develops and operates a smart publishing and distribution platform for books, journals, magazines and catalogs to market digital issues on iPad, Android, WebOS, and other tablets. The firm also offers a white labeled service and works directly with the publishers, allowing them to offer the digitalized content within a dedicated, branded application. The company was founded by Daniel Höpfner, Jens Gützkow and Christian Marsch on July 30, 2009 and is headquartered in Berlin, Germany.

signals Invest GmbH (signals Venture Capital) is venture capital investment subsidiary of SIGNAL IDUNA Lebensversicherung AG, ultimately owned by SIGNAL IDUNA Gruppe, founded in 2017. The firm is headquartered in Berlin, Germany.