Ralf Birkelbach

Ganske Verlagsgruppe GmbH operates as a holding company that publishes and distributes books, magazines, and multimedia-based products. The firm through its subsidiaries offers articles, CDs, remainder books, and videos. It also engages in the mail order of books, art books, and catalogues. The company was founded by Thomas Ganske in 2001 and is headquartered in Hamburg, Germany.

Gruner + Jahr Deutschland GmbH publishes printed and digital media products. The company distributes premium magazines under the STERN, GEO, BRIGITTE, ESSEN & TRINKEN, SCHÖNER WOHNEN, CHEFKOCH, BARBARA, BEEF, and 11FREUNDE brands. It also operates the international digital marketing platform AppLike. The company was founded by John Jahr, Sr., John Jahr, Gerd Bucerius, and Richard Gruner on June 30, 1965 and is headquartered in Hamburg, Germany.

Springer Nature Deutschland GmbH publishes scientific books, periodicals, and journals that focus on scientific and technical information. It also offers business services, seminars, trade fairs, conferences, as well as online publishing. The company was founded by Julius Springer on May 10, 1842 and is headquartered in Berlin, Germany.

EJOT International GmbH provides management services. The company is based in Germany, specifically in Bad Berleburg, and has subsidiaries in Poland. The German company was founded in 1998 and is led by CEOs Ralf Birkelbach, Wolfgang Bach, and Christian F. Kocherscheidt.

EJOT Holding GmbH & Co. KG operates as a holding company with focus on the manufacture, development, and distribution of fastening solutions. Its products include encompass fasteners, screws, and screw components. The company was founded in 2001 and is headquartered in Bad Berleburg, Germany.

Hoffmann & Campe Verlag GmbH is a German renowned publishing company that was founded in 1781 by Benjamin Gottlob Hoffmann. The company is based in Hamburg, Germany and is part of the Ganske Verlagsgruppe. The company publishs both fiction and non-fiction books from well-known German and international authors under their imprint, Atlantik.

RBA Regionalbus Augsburg GmbH provides school bus transportation services. The private company is based in Augsburg, Germany. and has subsidiaries in Germany. The CEO of the German company is Josef Zeiselmair.

Part of Springer Nature AG & Co. KGaA, Springer Fachmedien Wiesbaden GmbH is a private company that specializes in publishing scientific and technical literature. The company is based in Wiesbaden, Germany. The CEOs of the German company are Stefanie Burgmaier, Joachim Krieger, Andreas Funk.