Roche CEO Severin Schwan

Severin Schwan, Roche CEO

In a surprise move, Roche CEO and Chairman Franz Humer (photo) will hand over the top executive post to Severin Schwan (above), the head of the diagnostics division. Roche said that the move to split the top two positions was driven by the growing complexity of responsibilities at the company. Humer joined Roche after he lost out in the fight to take the helm at GlaxoSmithKline. He's previously worked at Schering-Plough.

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