S4 Capital, the advertising business Sir Martin Sorrell launched after leaving WPP last year, has published its first annual report.
$4.4 billion deal will also see Publicis Groupe enter a strategic partnership with Epsilon's current owner Alliance Data.
Ned Doyle, Mac Dane and Bill Bernbach founded their agency in New York in 1949.
Speaking exclusively to Campaign, Sadoun set Publicis Groupe's full-year results in the context of the changing nature of the advertising business and the challenges facing the company.
Pandey will continue to be based in Mumbai and takes on a brief to raise the quality of creativity across the Ogilvy network
Ogilvy is ditching Mather, introducing a new corporate identity and cementing months of streamlining with a simplified organisational structure that chief executive John Seifert says will "build a new model for our industry".
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