Story · AK000274

96% of Advertisers Know What Principal Media Is. It Didn't Matter.

A former GroupM executive's lawsuit against WPP, now bolstered by Sony Pictures' own independent investigation, alleges a $350 million rebate scheme dressed up as a media discount. The most damning detail isn't the number. It's the claim that clients who explicitly declined to participate had their budgets pooled into it regardless.

Last updated 02/11/2026