Martin joined us in 2005 as a senior researcher, but he quickly moved on to become head of our research group Semantics in Business Information Systems (SEBIS), which he lead until 2009. Despite the fact that he was also the CEO of Hepp Research GmbH and working as a professor in Munich, he found the time to join us again as a visiting scientist from April 2011 until September 2012. His impressive multitasking abilities will always be admirably remembered.