Guillaume de Posch, born in 1958, started his career at the international energy and services company Tractebel (1985 to 1990) and then joined the global management consulting firm McKinsey & Company (1990 to 1993).
Guillaume de Posch began his career in the media industry at the Luxembourg-based Compagnie Luxembourgeoise de Télédiffusion (CLT), as assistant to the Managing Director (1993 to 1994) and then became Head of CLT’s TV operations in French-speaking countries (1995 to 1997). From 1997 to 2003, he was Deputy General Manager and Programming Director of the French pay-TV company TPS, before joining the publicly listed ProSiebenSat1 Media AG in August 2003, first as Chief Operating Officer and then as Chairman of the Executive Board and CEO (2004 to 2008).
Guillaume de Posch was appointed Chief Operating Officer and new member of the RTL Group Executive Committee on 1 January 2012.
With effect from 18 April 2012, Guillaume de Posch assumed the role of Co-CEO of RTL Group. In this capacity and until April 2017, he was responsible for the Group’s broadcasting operations outside Germany, and the Group’s content production business, FremantleMedia. As from April 2017, Guillaume de Posch is responsible for Mediengruppe RTL Deutschland, while remaining in charge of Groupe M6, RTL Radio (France) and RTL Belgium.
Together with Co-CEO Bert Habets, he is jointly responsible for the Group’s global digital businesses, SpotX, BBTV and StyleHaul, and for Group Strategy, Business Development, Corporate Communications & Marketing, European Affairs, Audit & Compliance and – together with the CFO – for Group HR.
Since 28 April 2015, Guillaume de Posch has been Chairman of the Supervisory Board of Groupe M6.