Juan Maria Riberas Mera was born in Spain. Juan Maria Riberas Mera's father, Francisco Riberas Pampliega, founded Corporacion Gestamp SL as a small steel trading company in 1958. Within 20 years, the company went on to become one of Spain's largest steel companies and diversified into auto parts in 1991. Juan Maria started at the company in a junior management position in 1992 after getting law and business degrees. Today, he sits on the board of the company, which he and his brother Francisco, the CEO, inherited at the time of their father's death in 2010. Gestamp Sl is a massive steel and automotive parts conglomerate with $11 billion in sales and 96 manufacturing factories all over, including six in China. The brothers each have a 50% stake.