Complex sentence: Léo Apotheker has been a member of the SAP AG Executive Board since 2002, and was promoted to co-CEO of the company in April 2008 to ensure a smooth handover from his predecessor Henning Kagermann when the latter's contract with the company expired in May 2009.
Split into simpler sentences: Léo Apotheker has been a member of the SAP AG Executive Board since 2002. He was promoted to co-CEO of the company in April 2008 to ensure a smooth handover from his predecessor, Henning Kagermann, when the latter's contract with the company expired in May 2009.