The founders of the Diethelm and Keller companies started their businesses in the late 1 860s, trading products between Europe and Asia. Over time, descendants of the founding families expanded the trading business to take in marketing, logistics and related services, while also diversifying into industrial and travel activities.
Today, the Diethelm Keller Group consists of four operating units, plus the divisions Diethelm Keller Real Estate and Shareholder Services as well as participations in DKSH Holding Ltd. and Bergos Ltd. All subsidiaries hold strong positions within their respective fields and operate with a high degree of entrepreneurial autonomy.
At the end of 2022, the Diethelm Keller Group employed 2,600 people in 19 countries

Operating Units and Investment Companies

  • Diethelm Keller Household Brands comprises renowned market leaders in the design, manufacturing and marketing of innovative household, kitchen, and dining products.
  • Diethelm Keller Premium Brands is the global market leader in premium outdoor furniture. It runs its subsidiaries Dedon, Gloster and Garpa independently, nurturing the unique character of each brand.
  • Diethelm Keller Industrial comprises Swiss and international proprietary B2B brands.  Wetrok specialises in innovative, sustainable, and professional cleaning systems and solutions. Diethelm Keller Aviation is a manufacturer of food service equipment for the airline industry.
  • Diethelm Keller Investments is a holding company for strategic equity holdings in small and medium-sized companies relating to established business areas.
  • DKSH, a 45 % participation of Diethelm Keller Holding Ltd., is the leading Market Expansion Services provider with a focus on Asia.
  • Bergos Ltd. is an independent Swiss private bank. Diethelm Keller Holding Ltd., together with a group of mainly Swiss entrepreneurs and members of the management, own a  majority stake in Bergos.


  DKH Holding LTD.
Diethelm Keller Holding LTD.

Operating Units
Angelo C. van Tol, CEO

Diethelm Keller Household Brands
Ownership 100 %

Diethelm Keller Premium Brands
 Ownership 93 %

Diethelm Keller Industrial
 Ownership 100 %

Diethelm Keller Investments
Ownership 100 %

Diethelm Keller
Real Estate
and Shareholder Services

Daniel R. Jagmetti

Diethelm Keller Real Estate

Shareholder Services








Strategic Investments
DKSH Holding LTD.
Ownership 45 %

Stefan P. Butz, CEO

Board of Directors
Marco Gadola,
Gabriel Baertschi
Wolfgang Baier
Jack Clemons
Adrian T. Keller
Andreas W. Keller
Annette G. Koehler
Hans Christoph Tanner
Eunice Zehnder-Lai

Bergos Berenberg AG
Ownership 24 %

Peter Raskin, CEO and Partner

Board of Directors
Christof Kutscher, Chairman
Adrian T. Keller,
Vice Chairman
Bruno Chiomento
Hendrik de Waal
Patricia Guerra
Andreas Jacobs
Sylvie Mutschler-von Specht
Michael Pieper

Board of Directors
Andreas W. Keller, Chairman
Adrian T. Keller, Vice Chairman 
Rudolf Ehrbar

Executive Committee
Andreas W. Keller
Adrian T. Keller

Audit Committee
Rudolf Ehrbar, Chairman
Adrian T. Keller