GlaxoSmithKline (GSK) concluded the mandated global media review it launched in May with the selection of custom Publicis Media team as its global media agency of record, according to sources with direct knowledge of the matter. “GSK periodically reviews its reviews its media buying arrangements to ensure they are continuing to deliver the best value… https://www.adweek.com/agencies/gsk-sends-1-5-billion-media-account-to-publicis/