Ralph Sonnenberg is a Dutch billionaire, and former CEO of the Netherlands-based Hunter Douglas Group. Biography Ralph Sonnenberg was born in May 1934. Hunter Douglas was founded by his father, who was Jewish and fled Germany in the early 1930s, in 1919. He owned at least 80% of Hunter Douglas. Sonnenberg is married with three children, and lives in Meggen, Switzerland. His sons David and Marko work for the company, both holding the role of Executive Chairman and Senior Advisor, respectively. References 1934 births Living people Dutch billionaires Dutch businesspeople Dutch expatriates in Switzerland People from Lucerne-Land District Dutch people of Jewish descent