Ivan Chrenko

Slovakia's first billionaire, Ivan Chrenko went into the real estate business in the early 1990s. His company, HB Reavis, developed the first business centers in Bratislava and the top shopping mall, later sold. In one of the earliest big post-Brexit real estate deals in London in 2016, HB Reavis, sold 33 Central to Wells Fargo for a reported $400 million. In Warsaw, it is constructing one of the tallest buildings in Europe. He's invested more than $10 million in fast growing e-commerce cloud startup Exponea.Chrenko served as CEO of the HB Reavis Group from 1994 to October 2013. He is now the board chairman.