https://yestino.com/entities/wpp-f5536bEvery event involving WPPenhttps://yestino.com/events/lawsuit-alleges-sony-investigated-wpp-s-media-operation-and-69e652https://yestino.com/events/lawsuit-alleges-sony-investigated-wpp-s-media-operation-and-69e652Fri, 21 Aug 2026 14:26:24 GMTA legal filing alleges Sony hired investigators to probe WPP, who said the agency improperly withheld rebates from clients. Sources: Business Insider