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Ex-GroupM Executive Sues WPP, Alleging Retaliation Over Undisclosed Rebate Profits

WPP rejects the complaint as unproven.

Overview

  • Richard Foster, a 17-year WPP veteran who led Motion Content Group, filed a lawsuit in New York on Tuesday claiming he was fired after warning about alleged kickback practices.
  • The complaint alleges GroupM generated $3 billion to $4 billion from rebate-driven deals over five years and improperly retained about $1.5 billion to $2 billion.
  • Foster says he submitted a 35-page internal report, was asked for a "sanitized" version, was sidelined from key roles, and was terminated on July 10, 2025.
  • The suit centers on volume-based discounts and other incentives that were allegedly not consistently disclosed to clients, noting that rebates are lawful in the U.S. but nondisclosure can create legal and contractual risks.
  • WPP says Foster was let go in a restructuring, disputes the allegations, and states no court has made findings as it prepares a vigorous defense.