Soner Cesur

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.

Verlag Bertelsmann Stiftung engages in the provision of educational and social affairs non-profit services. It specializes in education, Europe, democracy, health, values, and economy. The company was founded by Reinhard Mohn in 1977 and is headquartered in Guetersloh, Germany.

Leipziger Messe GmbH manages and organizes trade fairs. It engages in designing, organizing, and implementing congresses, guest shows, and show, sport and concert events, as well as other events and corporate business functions. The firm serves exhibitors and organizers. The company was founded in 1996 and is headquartered in Leipzig, Germany.

Trenkwalder International AG provides human resources consulting services. It offers temporary staffing, payroll, onsite management, training, and outplacement and personnel consultancy services. It conducts operations in Germany, Hungary, Slovakia, Slovenia, Czech Republic, Croatia, Serbia, Greece, Macedonia, Montenegro, Bosnia, Rumania, Poland, Bulgary, Turkey, Albania, Liechtenstein and Switzerland. The company was founded by Richard Trenkwalder in March 1985 and is headquartered in Vienna, Austria.

Bertelsmann Management SE is an international media enterprise with corporate divisions including RTL Group, Penguin Random House, and Gruner + Jahr. The private company is based in Gütersloh, DE and has a global presence of subsidiaries in several regions. The German company's Press Center provides detailed information for journalists, and the company is also committed to Corporate Responsibility activities. Thomas Hermann Rabe has been the CEO of the company since 2012.