Wuerth is the owner of the Wuerth Group, a German maker of screws and tools. The Kuenzelsau-based groups is closely held and includes 400 companies selling industrial construction materials in about 80 countries. Wuerth Group reported revenue of 20.2 billion euros ($21.9 billion) in 2024 and has more than 4 million customers.
The majority of Wuerth's fortune is derived from his control of the Wuerth Group, a closely held manufacturer of screws and other building supplies. He controls the stake through a series of family trusts, which are held in the name of his three children, according to company filings.
The billionaire is credited with the fortune to reflect his role as chairman of the supervisory board of Wuerth Group's family trusts. Wuerth Group has about 400 companies in 80 countries, more than 4 million customers and total sales of 20.2 billion euros ($21.9 billion) in 2024, according to its website.
The company's valuation is based on the average of the enterprise value-to-Ebit, enterprise value-to-Ebitda and price-to-earnings multiples of four publicly traded peers: Stanley Black & Decker Inc, Forbo Holding AG, Masco Corp and Snap-on Inc. The financials were updated on June 13, 2025 and this led to a decrease in the calculation of about $5 billion.
The value of his cash and other assets is based on an analysis of insider transactions, taxes and market performance.
The press office at the Wuerth Group didn't respond to a request for comment on the net worth calculation.
Reinhold Wuerth was born in Oehringen, Germany in 1935, to Alma and Adolf Wuerth. His parents started a screw selling business in Kuenzelsau, Germany, in July 1945. He quit high school at age 14 to join the family business, inheriting the company after his father's death five years later.
When he took control in 1954, the company had $100,000 in sales. Global expansion followed and by 1988 revenue reached $1 billion. He stepped down as CEO in 1994 and became chairman of the company's supervisory board. His daughter, Bettina, took over his board position in 2006, when Wuerth was named honorary chairman.
The billionaire's family has an art collection of more than 15,000 works and opened the Kunsthalle Wuerth museum in 2001 to display part of the collection to the public.