
Beda Diethelm
$2.43B
$13.1M (-0.5%)
as of 04/18/25
About Beda Diethelm
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.
Personal stats
Citizenship
SwitzerlandSource of wealth
Hearing aidsResidence
Zurich, SwitzerlandBirth date
01/01/41 (age 84)Self-made
self-madeBeda Diethelm’s fortune is worth

41K
troy ounces of gold

37K
median U.S. household

24K
median U.S. income

0.049%
U.S. credit card volume

0.01%
GDP of the United States

0.007%
United States debt
Net worth history
Annual ranking
Net worth over time
Real-time ranking
Financial assets
SIX SWISS | SOON-CH
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