A class action lawsuit has been filed against WPP plc and its top executives after the company’s shares plunged 18% following CEO Mark Read’s retirement announcement. Filed in the U.S. District Court for the Southern District of New York, the suit alleges WPP misled investors between February and July 2025 about its revenue outlook and market position.
The complaint claims WPP downplayed risks while its media arm, WPP Media (formerly GroupM), was losing market share. The stock drop followed a July 9 update revealing weaker performance and restructuring issues. Investors who bought WPP shares during the period have until December 8, 2025, to seek lead plaintiff status.