Advisory board

Experienced, renowned consultants for all relevant business topics.

Experienced, renowned experts for all

relevant business topics.

Renowned experts for maximum PLEXUS quality

PLEXUS can always call on its advisory board to support its operational team with advice and assistance. Exchanging knowledge and opinions, and jointly adopting new perspectives on society and the investment world – this has been part of our development since the company was founded in 2006.

The advisory board is a PLEXUS initiative for quality optimization. As required by Swiss law, our advisory board includes the Chairman of the Board of Directors of PLEXUS, Ulf Becker, whose profile you can also find below. The two other legally required members of the Board of Directors are PLEXUS founder and CEO Guenter Jaeger and his Co-CEO, Doris Di Marzio.

Ulf Becker

Chairman of the Board of Directors

CEO and Owner of Early Stage Management GmbH, founded 2011.

Besides running Early Stage Management GmbH Ulf Becker from 2017 until mid of 2021 Ulf Becker was Member of the Board and Co-CIO of Shareholder Value, a Frankfurt based investment boutique. Early Stage Management GmbH is focused on investments in young companies, to which he also provided operational support. 


Prior to this, Ulf Becker was a partner at Lupus alpha from 2000, the year of the company’s foundation, until 2011; here, he was responsible for absolute return mandates. Ulf Becker began his professional career in 1997 at the management consulting firm PWC, having previously studied business administration at Justus Liebig University in Giessen. Before going to university, Ulf Becker completed a banking apprenticeship at Deutsche Bank in Iserlohn from 1989 onwards.

Dr. Hendrik Leber

Member of the Advisory Board

Dr. Hendrik Leber is the founder and managing partner of ACATIS Investment Kapitalverwaltungsgesellschaft mbH, based in Frankfurt am Main. ACATIS is one of Europe’s leading value investors. Before founding the company in 1994, Dr. Leber worked in the corporate finance division of Bankhaus Metzler in Frankfurt. Prior to this, he worked as a consultant for financial service providers at management consultancy McKinsey.


Hendrik Leber studied business administration at Saarland University, the University of St. Gallen, Syracuse University (New York) and the University of California, Berkeley. He received his doctorate (Dr. oec.) from the University of St. Gallen, where the focus of his studies was on banking management.

Peter Willner

Member of the Advisory Board

Peter Willner is Head of Asset Management for Pensions and Alternative Investments at Munich-based infrastructure, mobility and healthcare company Siemens.


Before joining Siemens AG in 2012, he worked as a portfolio manager at major bank HVB/UniCredit for seven years. Prior to this, he held various positions at Versicherungskammer Bayern, the largest public insurer of personal and property insurance in Germany. His achievements during this time include establishing the Alternative Investments division in joint responsibility. Peter Willner studied in Augsburg and Belfast. Following his degree in business administration, he began his professional career at Dutch shipping company Nedlloyd.

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