René Lenggenhager

Chief Executive Officer
Born 1960; Swiss and Italian citizen; electro engineer HTL, PhD in physics from ETH Zurich and an Executive MBA from University of St. Gallen

Dr. René Lenggenhager started his career as an R&D engineer and later as head of R&D at Landis&Gyr AG in Zug (Switzerland), followed thereafter by Cerberus AG and Siemens Building Technologies in Männedorf (Switzerland). From 2000 to 2015 he was a senior manager at Mettler-Toledo AG in Greifensee (Switzerland), where he lead the Global Business Area “Laboratory Weighing Technologies” as its general manager. Since 2015 he functions as general manager for the Bruker BioSpin Group in Fällanden/Karlsruhe/Boston.

Markus Portmann

Chief Financial Officer
Born 1959; Swiss citizen; Betriebsökonom FH degree in economics, HWV Berne; Controller SIB; Executive MBA, University of Rochester, NY

Markus Portmann joined COMET in 2004 as CFO. From 2001 to 2004 he was CFO and vice president of Ascom's Enterprise Communication Division and Aastra PBX. From 1990 to 2001 he held various managerial positions at Fenaco, the Swiss Broadcasting Corporation and Der Bund Verlag AG, ultimately as CFO and head of Management Services.

Michael Kammerer

President Plasma Control Technologies
Born 1961; Swiss citizen; MBA in Strategy and Procurement Management, University of Birmingham, UK

Michael Kammerer has been with the COMET Group as Vacuum Capacitors Head of Supply Chain Management and Production since January 2008 and was appointed to President of PCT (former Vacuum Capacitors) in September 2008. He was previously employed at well-known companies in the metal and automotive industries, most recently for Saia-Burgess AG/Johnson Electric as head of Purchasing and Supplier Quality Assurance.

Eric Dubuis

Chief Information Officer
Born 1964; Swiss citizen; Dr. phil. nat. doctorate in computer science, University of Berne; MBA, University of Rochester, NY

Dr. Eric Dubuis has been with the COMET Group as Chief Information Officer since October 2005. His prior career included management positions in software development at well-known companies such as Ascom Switzerland, Bell Labs/Lucent Technologies in New Jersey, USA, and Xebeo Communications, New Jersey.

Prisca Hafner

Chief Human Resources Officer
Born 1967, Swiss citizen; Diploma in Banking and Certified Advanced Studies in Human Resources Management and Executive Coaching of Zurich University of Applied Sciences (ZHAW).

Prisca Hafner has been responsible for global HR management within various segments of the Swiss Oerlikon Group. Prior to this, she gained valuable experience working as a consultant and in various HR management positions at Credit Suisse Asset Management in Zurich, Luxembourg and London.

Stephan Haferl

President Industrial X-Ray Modules
Born 1972, Swiss and Norwegian citizen; Master's degree in mechanical and process engineering from the Swiss Federal Institute of Technology (ETH), Zurich, PhD with work on thermodynamics and fluid dynamics.

Stephan Haferl has been working for the Comet Group successfully in various management positions since 2007. His strong track record includes proven performance in business development, innovation, technology, and product management, among other areas.
Before, he held the positions of General Manager at Bartec-Meta Physics SA and Chief Operating Officer at Bartec Bacab SA.

Thomas Wenzel

President X-Ray Systems
Born 1965, German citizen, information scientist (University Erlangen, D) PhD in materials science and materials engineering (University of Saarland, D)

Dr. Thomas Wenzel has an exceptional knowledge of the relevant x-ray systems markets and applications and 15 years of management experience at the renowned Fraunhofer Institute for Integrated Circuits in Erlangen, Germany, at last as Head of Department Process-Integrated Test Systems.

From 2015 to 2018, Thomas Wenzel served as Technology Scout and Senior CT Expert for the Comet Group and played an important role in the further development of the X-ray systems business as interim Head of Research and Development before being appointed President in December 2018.