Definiens Management Team
Thomas P. Heydler
Chief Executive Officer
Chairman of the Executive Board
Thomas P. Heydler, Chief Executive Officer of Definiens AG, joined Definiens in 2004. He brings more than 20 years of entrepreneurial expertise and in-depth knowledge of global software business to Definiens.
Mr. Heydler was President and CEO at Barcelona Design Inc. based in San Jose, USA. Before joining Barcelona, Mr. Heydler served as President and CEO for InterPro Business Solutions, Inc., USA. He was Vice President and Executive Officer at Documentum Inc., a leading software and solutions provider with specific focus on the
pharmaceutical and life sciences industry.
He built and drove Documentum’s European operations and assumed worldwide responsibility for Marketing and Documentum’s Application Business subsequently. Prior to this engagement, he served as Vice President and General Manager Europe for Cadence Design Systems and held senior leadership positions at Siemens AG.
Mr. Heydler holds a Diplom-Ingenieur degree in Electric Engineering and Computer Science from the Technical University in Munich.

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Dr. Markus Rinecker Chief Financial Officer Member of the Executive Board
Dr. Markus Rinecker, Chief Financial Officer, joined Definiens in July 2009. He brings more than 10 years of entrepreneurial and finance experience as well as in-depth clinical expertise to the company.
Prior to joining Definiens, Dr. Rinecker served as Managing Director at one of the leading surgery hospitals in Munich. He managed 350 employees, had full P&L responsibility, established a new department for open heart surgery and streamlined organizational processes to increase the organization’s profitability.
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Furthermore, he evaluated potential acquisition targets and participated in share deal transactions for the hospital chain Humaine Kliniken GmbH. He was also actively involved in the start-up venture ProHealth AG which opened Europe’s first full clinical proton radiation centre for cancer therapy in March 2009.
Dr. Rinecker holds a Doctoral Degree in Medicine at the Ludwig-Maximilians-University in Munich as well as a Masters Degree in Business Administration of INSEAD, France and Singapore.
Prof. Dr. Gerd Binnig
Founder and Head of Research
In 1986 Prof. Binnig, along with his colleague Prof. Heinrich Rohrer, was awarded the Nobel Prize in Physics for his work in scanning tunneling microscopy. Prof. Binnig and Prof. Rohrer were recognized for developing the powerful microscopy technique, which can form an image of individual atoms on a metal or semiconductor surface by scanning the tip of a needle over the surface at a height of only a few atomic diameters.
Born in Frankfurt, Germany, Prof. Binnig studied at the J.W. Goethe University in Frankfurt, where he received his bachelor's degree in 1973 and his doctorate degree in 1978.
That year he joined a physics research group at IBM's Zurich Research Laboratory. Prof. Binnig was assigned to IBM's Almaden Research Center in San Jose, Calif. from 1985 to 1986, and was a visiting professor at Stanford University from 1987 to 1988.
