WPP chairman faces investor revolt over unpublished Martin Sorrell report

Roberto Quarta should be ousted for handling of chief executive’s exit, says Glass LewisThe WPP chairman, Roberto Quarta, faces a shareholder revolt over the departure of the former chief executive Sir Martin Sorrell, after influential advisory group Glass Lewis recommended that investors vote against his re-election at the advertising giant’s annual meeting next month.In a report to investors, Glass Lewis said it had “severe reservations” about issues including the failu