Beda Diethelm (#1945)
- $ 2 B
- Hearing aids
- Switzerland
- M
- 85 Years
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About Me
Beda Diethelm is Swiss hearing aid manufacturer Sonova's largest individual shareholder, with a 10% stake. Diethelm joined what would become Sonova in 1965, receiving a chunk of equity from the former owner in 1980. Sonova has sales of roughly $2.8 billion and is based in Stafa, Switzerland and has production facilities in Vietnam and China. Born in the tiny village of Galgenen, Switzerland, Diethelm first dabbled in electronics as an apprentice for a radio and TV technician in Zurich. By 1962, Diethelm had become the head of production and technical director of Bommer, a Zurich company that was a global supplier of hearing aids.
Achievements
Career Highlights
A snapshot of the defining milestones, leadership decisions, and breakthroughs that shaped Beda Diethelm’s rise and global influence.
Wealth Growth
Net Worth Growth Over Time
Tracking Beda Diethelm’s net worth journey over the years, highlighting key growth phases and financial milestones.
Current Net Worth: $2.2B
(May 4, 2026)
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