Governing bodies
Executive Board
Our focus on secondary real estate locations coupled with strong asset management has proven to be a resilient business model across all real estate cycles.”
Dr. Dirk Rüffel (CEO)
CEO since 1 February 2026
Appointed until 31 January 2027
Responsibilities: Strategy, transactions, portfolio, asset & property management, asset & portfolio controlling , HR, corporate communications
Dr Dirk Rüffel (born 1976) has been the Chief Executive Officer of DEMIRE Deutsche Mittelstand Real Estate AG since 1 February 2026. He is a German lawyer with many years of national and international experience in real estate and asset management. Before joining the Management Board, Dr Rüffel had, since 2024, served as Managing Director of Lapithus Management GmbH in Frankfurt, the German subsidiary of a pan-European asset manager, where he was responsible for a real estate portfolio of approximately EUR 3 billion across various asset classes. From 2015 to 2024, he worked at Cerberus, most recently as Managing Director, where he was responsible for large-volume real estate portfolios in Germany and Europe in the asset management division. Between 2009 and 2015, he held senior positions at Argoneo Real Estate (later Bilfinger Real Estate Argoneo), where he was Head of Transactions with responsibility for extensive real estate portfolios and complex transactions. Prior to that, Dr Rüffel worked for several US law firms.
Our expertise in the area of financing and the cost discipline we have established within the company are benefiting us in the current market phase. ”
Tim Brückner (CFO)
CFO since 1 February 2019
Appointed until 31 December 2026
Responsibilities: Finance, accounting, treasury, investor relations, corporate governance, legal and IT
Tim Brückner (born 1977) has been the Chief Financial Officer of DEMIRE Deutsche Mittelstand Real Estate AG in Langen since 1 February 2019. He was also appointed as the CEO of Fair Value REIT-AG with effect from 20 May 2019. From 2012 until 2019, the trained banker held various positions at CORPUS SIREO Real Estate, including Managing Director of the subsidiary in Luxembourg and Head of Portfolio Management. From 2007 until 2012, Mr Brückner worked at Rothschild GmbH, his last position there being that of Vice President. From 2005 until 2007, he worked in the Global Advisory Division at HSBC in London. In 2005, Mr Brückner completed a bachelor’s degree in Business Administration, Banking and Finance, and a master’s degree in Banking & Finance, at the Hochschule für Bankwirtschaft (today’s Frankfurt School of Finance & Management). During his studies, he worked as an analyst at BHF Bank AG and NG Investment Banking.
Supervisory Board
Dr. Matthias Prochaska
(Chair)
Appointed until the 2026 AGM
Main activities outside the Company and other activities as a member of governing bodies of comparable domestic and foreign business enterprises:
No further mandates
Dr. Matthias Prochaska (born 1979) is a German lawyer with a focus on corporate and real estate law. Since 2020, he has been Executive Director at Lapithus Management Group in Luxembourg, where he has held various legal roles since 2013. Prior to that, he worked as an Associate at Arendt & Medernach in Luxembourg and as a research associate at Norton Rose LLP in Frankfurt. He holds a doctorate in law from the University of Trier, an LL.M. from the University of East Anglia, and an M.A. in Real Estate Investment & Finance from EBS. Dr. Prochaska has over 15 years of experience in private equity and real estate.
FRANK HÖLZLE
(DEPUTY CHAIR)
Appointed until the 2027 AGM
Main activities outside the Company and other activities as a member of governing bodies of comparable domestic and foreign business enterprises:
- CEO of Care4 AG, Basel, Switzerland
- Chair of the Advisory Board of clickworker GmbH, Essen
- Chair of the Advisory Board of Mindlab Solutions GmbH, Stuttgart
- Chair of the Supervisory Board of mobileObjects AG, Büren
- Chair of the Advisory Board of rankingCoach international GmbH, Cologne
- Member of the Board of Directors of SIC Invent AG, Basel, Switzerland
- Member of the Advisory Board of reBuy reCommerce GmbH, Berlin
- Member of the Advisory Board of sevDesk GmbH, Offenburg
- Member of the Board of Directors of GreySky Properties AG, Basel
- Chair of the Supervisory Board of Fair Value REIT-AG, Munich
Frank Hölzle (born 1968) holds a degree in economics and has been the CEO of Care4 AG, a single family office located in Basel, Switzerland, since 2015. He has worked there since 2010. From 2003 until 2010, Mr Hölzle was a member of the Executive Board and partner of eCapital entrepreneurial Partners AG, a venture capital company located in Münster. In 2002, Mr Hölzle became the managing director of HvM-Consulting GmbH in Düsseldorf, after having held positions from 1998 until 2002 in Marl and Frankfurt am Main as an authorised representative and director of a listed investment company.
Ernö Theuer
(Member)
Appointed until the 2027 AGM
Main activities outside the Company and other activities as a member of governing bodies of comparable domestic and foreign business enterprises:
Managing Partner CESPI Group
Managing Director (CRO) SC Finance Four GmbH
- Managing Partner CK Holding GmbH
Ernö Theuer (born 1962) has been managing partner of CRESPI Group in Frankfurt am Main, which specialises in acquiring, holding and managing investments, since 2006. He has also been Managing Partner of CK Holding GmbH since 2021 and Managing Director of SC Finance Four GmbH since the beginning of 2024. After working as assistant to the board and sales manager in the consumer goods industry, Mr Theuer held various management positions, including T&P Management Consultants AG, PE Verlag für Wirtschaftsinformationen GmbH and HEGRA GmbH & Co. KG. Ernö Theuer is Senior Advisor at a German listed private equity company and accredited as a start-up and financing consultant at two globally recognised credit institutions for reconstruction and the World Bank.