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.
Owner of Sapient.Razorfish and Starcom has also hired Lloyds marketer Ros King.
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 as chairman of Ogilvy India as he takes over the role Tham Khai Meng held until his abrupt departure in July.
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