WPP CEO Sir Martin Sorrell is the focus of an investigation into possible misuse of company assets and accusations of improper behavior, The Wall Street Journal reports. The high-profile ad ...

Sir Martin Sorrell, CEO of WPP, the world's largest advertising company, explained how Google — once a threat to advertising agencies — is now its biggest partner. WPP spent $5 billion of its ...

Sir Martin Sorrell has warned S4 Capital will feel the weight of global macroeconomic volatility into 2025 as losses at the London-listed marketing group widened significantly. In a statement ...

Just months after leaving WPP, Sir Martin Sorrell stunned the ad industry by setting up S4 Capital, merging it with MediaMonks and listing the group on the London stock market. In an exclusive ...

S4 Capital, Sir Martin Sorrell’s advertising giant, recorded a sharp drop in revenue in its first-quarter trading update as geopolitical tensions weighed. The firm posted a 11.4 per cent slump in net ...