A batch of new court documents filed Thursday morning in the ongoing wrongful termination suit against WPP suggest that Sony voluntarily provided information to the defense regarding its own investigation into the holding company’s business practices.
On August 13, the legal team for Richard Foster, the former CEO of GroupM’s Motion Entertainment, filed an amended complaint against WPP that included documents from Sony own investigation, which it said “corroborated Foster’s years of whistleblower reports.”
The amendment was to Foster’s initial lawsuit, filed in October 2025, which alleged WPP had retaliated against and ultimately fired the exec for trying to expose what he perceived was a global illegal rebate scheme.
