Michael Grabner

Michael Grabner Media GmbH provides media management and consulting services. TI gives advices to companies which holds interest in offline and online media marketing services. The company was founded by Michael Grabner and Franziska Grabner in February 2007 and is headquartered in Vienna, Austria.

DvH Medien GmbH provides management services. The private company is based in Stuttgart, DE. and has subsidiaries in United Kingdom, Germany and United States. The CEOs are Oliver Finsterwalder, Rainer Esser. The German company was founded in 2007.

Verlagsgruppe Georg von Holtzbrinck GmbH operates as an investment holding company with interests in publishing books, newspapers, periodicals and online media. Its customers include authors, researchers, academics, educators, librarians, and readers. The company was founded in 1971 and is headquartered in Stuttgart, Germany.