German businessman Georg Schaeffler has an estimated net worth of $12.9 billion in April 2019. He is one of the owners of the Schaeffler Group which encompasses the Schaeffler AG. The latter is considered as the largest producers of machine components and ball bearings in the world.
Kjeld Kirk Kristiansen has an estimated net worth of $12.9 billion as of January 2018. LEGO is a family business which was passed through generations from Kjeld Kirk Kristiansen’s grandfather Ole Kirk Kristiansen, then to his father Godtfred Kirk Kristiansen. From 1979 to 2004, Kjeld Kirk Kristiansen served as the Chief Executive Officer and President of the LEGO Group. In 2004, he stepped down as the CEO and President of the company to focus on his duty as the owner as well as the Vice Chairman of the Board of Directors.
Russian business oligarch Mikhail Fridman has an estimated net worth of $13.1 billion in April 2019. His massive net worth is derived from banking, oil and telecom businesses. Currently, he sits as the Chairman of the Supervisory Board of Alfa Group Consortium, a company he founded in 1989. Today, Alfa Group Consortium is considered as one of the largest private investment groups in Russia.
David Duffield is the Chairman and Chief Executive Officer of Workday, a financial management and human capital management software vendor. He has an estimated net worth of $13.2 billion as of April 2019. He is the 229th richest person in the “Forbes 400” list and he was ranked 262nd in the list of World Billionaires.