Billionaire Profile
Beda Diethelm
Global Rank
#1797

Image: Public domain | via Wikimedia Commons

Beda Diethelm

CEO, Sonova Holding AG
CH
Real-Time Net Worth
$2.2B
As of December 2025
Age
84
Source
Hearing aids
Industry
manufacturing
Citizenship
CH

Biography

Beda Diethelm, the Swiss hearing aid magnate, is a prominent figure in the healthcare industry, known for his significant contributions to Sonova Holding AG. As the largest individual shareholder with a 10% stake, Diethelm's net worth is estimated to be $2.2 billion. His career began in the electronics field, and he rose through the ranks to become the head of production and technical director of Bommer, a hearing aid supplier. He joined what would become Sonova in 1965 and played a key role in its growth into the world's largest hearing aid manufacturer, with Sonova generating approximately $2.8 billion in sales. Diethelm's achievements have cemented his position among the world's wealthiest individuals.

Wealth Over Time

In-Depth Profile

Early Life and Career Beginnings

Beda Diethelm was born in the tiny village of Galgenen, Switzerland. His early interest in electronics led him to become an apprentice for a radio and TV technician in Zurich. This hands-on experience laid the foundation for his future career. By 1962, Diethelm had already made significant strides, becoming the head of production and technical director of Bommer, a Zurich-based company and global supplier of hearing aids. This role gave him valuable experience in the hearing aid industry, paving the way for his later success.

Rise to Success with Sonova

In 1965, Diethelm joined what would become Sonova (originally founded as AG für Elektroakustik in 1947). He received a chunk of equity in 1980. Sonova, under Diethelm’s influence, has become the world's largest hearing aid manufacturer. The company's success is reflected in its sales, which currently stand at approximately $2.8 billion. Sonova is based in Stafa, Switzerland, with production facilities in Vietnam and China.

Key Business Strategies and Leadership

Diethelm’s strategic focus on innovation and quality has been instrumental in Sonova's market leadership. The company's commitment to technological advancement, particularly in digital hearing aids and wireless connectivity, has met the evolving needs of consumers. Diethelm's leadership style likely involves a deep understanding of both the technical and business aspects of the hearing aid industry. His long-term stake in the company, coupled with his deep industry knowledge, has helped guide Sonova through market challenges and maintain its competitive edge.

Philanthropy

While the specific details of Beda Diethelm’s philanthropic efforts are not extensively documented in public sources, his significant wealth suggests a capacity for substantial charitable contributions. Diethelm, in addition to building a successful business, contributes to causes through his support for Sonova. Specific initiatives will be researched to update the philanthropic section.

Career Milestones

1962

Head of Production and Technical Director

Became head of production and technical director of Bommer, a Zurich-based global supplier of hearing aids.

1965

Joined Sonova

Joined the company that would become Sonova.

1980

Received Equity

Received a chunk of equity from the former owner of the company.