John Murray, executive chairman of Dentsu Aegis Network’s global media innovation and investment arm Amplifi, is to retire at the end of July.
Murray will not be directly replaced, according to a Dentsu Aegis Network spokeswoman, who said it was likely that Amplifi would "align more closely to the media and performance [business], which is under the leadership of [global chief executive, media and performance] Peter Huijboom".
Amplifi will remain separate from Carat and Vizeum, and will retain responsiblity for media buying on their behalf.
It also handles global media partnerships, as well as housing programmatic team Amnet, content production agency The Story Lab and the commercial team that recently pulled its backing for the new Woodstock festival.
Tim Andree, executive chairman and chief executive of Dentsu Aegis Network, said: "John’s unique vision and approach to our global partnerships and media investment, combined with his strength of leadership, has created real differentiation for our business and value for our clients. He will be greatly missed, but we wish him all the best in this next stage of his life."
Murray joined Aegis as president of its Digital Action Group in 2011, the year before Dentsu swooped in with a £3.2bn acquisition offer. He went on to launch Amplifi in 2013.
Beginning his media career in the late 1980s selling ads on Emap’s consumer titles, Murray later moved agency side and was one of founding executives of digital agency PHDiQ in 1999, eventually becoming its managing director. He also spent four years in Australia leading digital at Mitchell Communications Group, which Aegis bought in 2010.