Complex sentence: Kleinfeld was CEO of Siemens AG from 2005 until July 2007.On April 25,2007, Siemens AG distributed a press release announcing that Kleinfeld was not available for a renewal of his contract.
Split into simpler sentences: Kleinfeld was CEO of Siemens AG from 2005 until July 2007. On 25 April 2007 Siemens AG distributed a press release announcing that Kleinfeld was not available for a renewal of his contract.