Simplify the following text for a Grade 9 native English-speaking person.
Original: Ronald `` Ron '' Dennis CBE ( born June 1 , 1947 ) is the executive chairman of McLaren Automotive and McLaren Group , and is also a significant shareholder in both companies . He was also the team principal of McLaren , the group 's Formula One team , until 2009 .
Simplified: Ron Dennis ( born 1 June 1947 ) is the team principal of the McLaren Formula One team and 15 % owner of the McLaren Group .