Pete Pedersen, former Edelman global tech chair, has resigned the CEO slot at Grayling, Huntsworth's global flagship.
The move comes as former Hill & Knowlton CEO Paul Taaffe, who was recruited in December for the Huntsworth helm, readies to take command of the holding company in April.
Huntsworth released a statement to say that Grayling's executive management team will oversee day-to-day activities on a interim basis.
Peter Chadlington, the Huntsworth CEO who hired Pedersen, credited him for making an important contribution to the firm and "repositioning as a digitally focused international PR company building multinational client engagement."
He wished Pedersen well.
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