Complex sentence: Sebastian Saxe holds a PhD in mathematics and was one of the CIOs of the year in 2012 and was chosen as CIO of the year 2015 for small and medium-sized Enterprises in Germany.
Split into simpler sentences: Sebastian Saxe holds a PhD in mathematics and was one of the CIOs of the year in 2012. Recently, he was chosen as CIO of the year 2015 for small and medium-sized Enterprises in Germany.