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About us

About us

As an internationally active company, Top Fifty supplies industrial and service companies, administrations with outstanding and experienced managers.

Top level interim managers

Several hundred customers from various sectors have already been supported by interim managers from Top Fifty. Experienced personalities of the first and second management levels from all sectors are quickly available for deployment.

We take a lot of time to recruit new candidates for Top Fifty interim managers. Top Fifty interim managers are also deployed internationally. The headquarters are in Switzerland.

At Top Fifty, also the mediators were successfully active for many years in top management positions. This helps for a quick understanding of the situation and formulation of the tasks with the customer and with finding the best suitable interim manager.

Top Fifty Concept

Top Fifty procures management personnel for difficult management tasks in change processes. Top Fifty provides experienced and practically-minded interim managers, who get the job done. They strive for quick, actionable results for the company and its employees.

Top Fifty seeks out the best interim managers on the market and recruits them in advance. The selection criteria are determined by market demand, economic trends and the nature of our clients’ assignments. Using our broad expertise and good understanding of people, we identify the leaders with the best performance and efficiency. The successful track records of Top Fifty’s interim managers build trust and create demand at the same time. Over 60% of the requests we receive stem from follow-up mandates or recommendations on the part of satisfied clients.

The history of Top Fifty

In the middle of the nineties, many companies began to make the management younger. People who were over fifty returned to the employment market and wanted interesting activities again. That was the time when Carlo von Ah, Hanspeter Brändli and Peter Arbenz founded Top Fifty AG in Zug. The main goal of Top Fifty was to make good and experienced managers available to industries and administrations for a limited time. Twelve successful years later, this idea is taken over and continued by their successors.

The networks were reorganized and the new member category “associate partner” was created. The reinforced market appearance with an active acquisition policy allowed Top Fifty strong growth in the last ten years. Interim management is beginning to gain acceptance in many companies.

Managing Partners

Urs Tannò

Urs Tannò

Managing Partner

Businessman with many years of experience as CEO and member of the board of directors of a listed trading and franchise company, management with internationally active paper manufacturer and American / European marketing company in Germany, consulting experience in change management and strategic reorganization.

Andy Kistler

Andy Kistler

Managing Partner

Executive with more than 30 years in general management. His career includes experience in sales, marketing, strategic development as well as change management in the context of acquisition and restructuring. Lately CEO of an international paper manufacturer.  He has been active in retail and distribution of consumer goods, including in the health market.

Pierina Tannò

Pierina Tannò

Managing Partner

Studied communication science, specialising in transcultural communication and mediation. Several years of experience as a communication specialist and project manager in the service sectors of the financial industry; Banks, Swiss Exchange and Deutsche Börse Group in cooperation with the Swiss National Bank. For four years engaged in the recruitment and placement of interim managers.

Carlo von Ah

Carlo von Ah

Founder and Honorary President

Lic. oec. publ.; Experience as supervisory board member and director of internationally active trade and production companies, member of expert committees in the technology sector, passionate writer.

Philippe Erard

Philippe Erard

Partnenaire Associé Honoraire

Graduate in business administration (MSc / lic. HEC) University of Lausanne, more than 30 years of experience in industry (paints, chemicals, packaging, processed food, sports goods), including 20 years as CEO, international experience especially in South America, the United-States, Switzerland and France, chairman or member of several boards of directors and strategic board. Former Top Fifty managing partner for French-speaking Switzerland and neighboring France.

Associate Partners

The Top Fifty professional network is expanding with Associate Partners. With their many years of professional experience, they not only have exceptional specialist knowledge, but also contribute great industry and management expertise. In addition, their personal integrity will be a great asset to the corporate culture of Top Fifty.

Heinz Wüthrich

Heinz Wüthrich

Associate Partner

Mechanical engineer with further training in business management, EFQM assessment and executive management. Broad-based experience in the management, set-up, reorganisation and restructuring of companies and business areas in the global environment across the watchmaking, domestic appliance, semiconductor, engineering and aviation industries.

Dr. Stephan Mayer

Dr. Stephan Mayer

Associate Partner

With a doctorate in mechanical and production engineering and 20 years’ experience in management positions, of which nine as CEO of an international Swiss mechanical engineering company. Self-employed as an interim manager since 2003, has executed more than 30 mandates as the CEO in turnaround,  group head of a listed industrial company, M&A and relocations for international manufacturing companies.

Dr. Patrick Jung

Dr. Patrick Jung

Associate Partner

Engineer; long-standing international experience in general management of companies in the electrical and mechanical engineering industry, strategy development and implementation, restructuring, process configuration and realisation as well as the management of major projects. Most recently CEO in the electronics industry.ie.

Thomas Hauser

Thomas Hauser

Associate Partner

Engineer HTL; NDS-U/MBA, many years of global experience as division head for product and systems management, design and development in the area of building control, CEO of an international sales company with a focus on strategy development, corporate mergers and  sales development in new markets and country business coach for emerging markets.

Josef Bauer

Josef Bauer

Associate Partner

Graduate engineer (Dipl.Ing) and business economist, extensive experience in positions of overall authority as CEO and managing director as well as being head of sales/marketing and production. Management in the field of plastics, automation and special-purpose mechanical engineering with a high export share.

Dr. Robert Sala

Dr. Robert Sala

Associate Partner

Graduate chemist with doctorate in materials engineering (Dr. sc. techn. ETH) and further training in business administration. Internationally recognised manager with more than 25 years experience in industry, vehicle manufacture, plastic and coating technology and technology management in change management, reorganisation and integration. Line manager, entrepreneur and member of board of directors.

Andreas Osswald

Andreas Osswald

Associate Partner

Business economist, professional experience acquired over more than 20 years in procurement and supply chain management in packaging, construction supplies, mechanical engineering and medical technology. The functions performed range from project manager to head of procurement for medium-sized companies and international corporations.

Hans Keist

Hans Keist

Associate Partner

Mechanical Engineer FH, Executive MBA, University of Strathclyde (UK) in General Management. Many years of experience in the tasks of management, divestment of businesses, post merger integration and restructuring. In addition, development and expansion of international markets and locations, technology development and marketing of new production processes for the production of polymers.