Complex sentence: Ian Davis (born 1952) was the managing director (chief executive) of McKinsey & Company from 2003 to 2009, succeeding Rajat Gupta on July 1,2003.
Split into simpler sentences: Ian Davis (born 1952) was the Managing Director (chief executive) of McKinsey & Company from 2003 to 2009. He succeeded Rajat Gupta on July 1,2003.