Ralph Sonnenberg net worth: Ralph Sonnenberg is a Dutch billionaire who has a net worth of $1.6 billion. Ralph Sonnenberg runs the Hunter Douglas Group that sells window coverings and architectural products, Sonnenberg eventually turned into a blinds baron. The group, which is the main source of his wealth, was founded by his father in 1919 as a machine-tool manufacture that ultimately started developing a new technology for the production of lightweight aluminum slats for Venetian blinds. The business did well and the growing company was the main supplier to the tallest man-made creation in the world, the Burj Khalifa tower in Dubai. Nowadays, Ralph Sonnenberg is the CEO and owns more than 80% of the firm's shares. He is married with three children, two of which (his sons Marko and David) are actively involved in the family business.
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