The company issued 90.7 million new shares in 2008, bringing its total shares to one billion. Sorrell and Brabeck are now believed to have a 0.3 per cent stake in the company.
The Week: People news - Ad men scoop stake in F1
Sir Martin Sorrell, the chief executive of WPP, and Peter Brabeck, the chief executive of Nestle, have both taken a stake in the holding company of Formula One, Delta Topoco.