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Composition of the Management Board

Chief Executive Officer and Statutory Director

Mark Siezen  

Mark Siezen was appointed Chief Executive Officer and chair of the Management Board on 1 September 2022. Mark previously worked as Chief Client Officer at Bouwinvest. Prior to that, he was Executive Director and member of the board at CBRE and held various positions at Multi Corporation, NSI and COFRA Holding (including Redevco and C&A). Mark has been a member of the Supervisory Board of Northwest Clinics (Noordwest Ziekenhuis Groep) since December 2021.

Chief Financial & Risk Officer and Statutory Director

Rianne Vedder  

Rianne Vedder was appointed Chief Financial and Risk Officer on 15 October 2019. She was formerly a Partner at EY Financial Services Advisory and jointly responsible for the growth and continued development of the consultancy practice of the EY organisation. She previously held positions within EY Financial Services and Capgemini. Rianne studied Business Economics at Maastricht University and holds a postgraduate Chartered Controller degree. She is an INSEAD-certified Independent Non-Executive Director. 

Chief Client Officer

Marleen Bosma

Marleen Bosma-Verhaegh was appointed Chief Client Officer on 1 November 2022. Marleen has worked at Bouwinvest since 2016. She was Head of Research & Strategic Advisory until early 2022, when she was made responsible for business development within the Client Management department. Before joining Bouwinvest, Marleen was jointly responsible for international listed and real estate investments at Blue Sky Group. Prior to that, she worked in various positions at Syntrus Achmea Real Estate & Finance, Philips Pension Fund and FGH Bank.

Chief Investment Officer Dutch Investments

Allard van Spaandonk

Allard van Spaandonk has been CIO Dutch Investments since 2013. He was formerly director Asset Management at Bouwinvest, director Retail Investments at Syntrus Achmea Vastgoed as well as Head of Residential Mortgages at Achmea Vastgoed. Allard is a member of the Advisory Board of the Amsterdam School of Real Estate (ASRE) and was member of the Management Board of NEPROM (Dutch association of project development companies) until 31 December 2021.

Chief Investment Officer International Investments

Stephen Tross  

Stephen Tross has been CIO International Investments since 2010. Stephen previously worked in the real estate audit practices at KPMG Accountants NV and PricewaterhouseCoopers in the Netherlands, New York and London. He studied Business Economics at the Hogeschool Utrecht and accountancy at NIvRA- Nyenrode. Stephen is a professional member of the British Institution of Chartered Surveyors and a chair of the management board of ANREV.

Director Dutch Retail Investments

Collin Boelhouwer

Collin Boelhouwer has been Director Dutch Retail Investments since 2008 and is responsible for the performance of the Bouwinvest Dutch Institutional Retail Fund. Collin has fifteen years experience in real estate management and gained his retail real estate experience with Fortis Real Estate. Collin studied Real Estate Management & Development at the University of Technology Eindhoven and has been a professional member of RICS since 2010.