Ralph Sonnenberg: key obituary facts
Is Ralph Sonnenberg dead? Yes. Ralph Sonnenberg died on October 29, 2026, at age 92.
Cause of death: Ralph Sonnenberg's cause of death has not been publicly confirmed.
What was Ralph Sonnenberg known for?
He was a Dutch businessman.
More about Ralph Sonnenberg
Born: 1934.
Gender: male.
Occupation: businessperson.
Known for: 80% of Hunter Douglas.
Title: Chairman and CEO, Hunter Douglas.
Ralph Sonnenberg, the Dutch businessman who owned at least 80% of Hunter Douglas, died October 29, 2026, aged 92.
Born in 1934, he became a senior leader of the Netherlands-based Hunter Douglas Group, serving as its chairman and chief executive and later as a former CEO. The company was founded in 1919 by his father, who was Jewish and fled Germany in the early 1930s.
Sonnenberg’s life and work were closely tied to the firm: his father established it, Sonnenberg led it, and two of his sons later held senior roles there. His ownership stake was at least 80% of the company. Sonnenberg was married and had three children. His sons David and Marko worked for Hunter Douglas, with David serving as executive chairman and Marko as a senior adviser. He lived in Meggen, Switzerland. His career placed him at the center of the family-founded business, combining executive leadership with a substantial ownership interest as the company continued under the involvement of the next generation.