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Twitter, which was officially valued at $9bn (£5.8bn) earlier this year, has added to speculation that it will seek an initial public offering in 2014 with the appointment of a Morgan Stanley investment banker, Cynthia Gaylor, as its head of corporate development.
It is all change at Kimberly-Clark's European marketing team, while Sky's Mike Darcey is to replace Tom Mockridge at News International in this week's round-up of people moves across advertising, marketing, media and PR.
Tony Hall takes over as the new director general of the BBC, Tim Hipperson, G2 Joshua's group chief executive, departs, Mondelez promotes its lead UK coffee marketer, Peter Seymour and Mike Moran joins Arena Media in this week's people moves.
Yahoo appoints Google veteran Marissa Mayer to the vacant role of chief executive while parting company with UK sales chief Steve Brown in this week's round-up of people moves across advertising, marketing and media.
John Teal leaves Mail Newspapers after 25 years and Mike Welsh takes the chief executive role at Publicis Chemistry in this week's round-up of people moves across advertising, marketing and media.
Philip Almond becomes the BBC's marketing chief and Jerri DeVard moves on from Nokia, among several senior client-side changes in this week's round-up of people moves across advertising, marketing and media.
Kellogg parts company with European president Stephen Twaddell while former DDB staffers open a new agency called Atomic London in Brand Republic's round-up of this week's people moves in advertising, marketing and media.
Fallon promotes Santiago Lucero to ECD, News International hires BBH partner Nick Stringer, and former ids sales director Martin Plant joins Global in Brand Republic's round-up of this week's people moves in advertising, marketing and media.
Simon Lawrence is to pursue angel investment opportunities in business and consumer data companies after quitting his role as chief executive of Information Arts.
VCCP hires Mother's creative team Faustin Claverie and Thierry Albert, while Yahoo's senior marketers James Tipple and Andrew Cocker are leaving the company, in Brand Republic's round-up of this week's people moves in advertising, marketing and media.
