Board of Directors
The Board has overall responsibility for Castellum’s strategy and organisation and manages Castellum’s business on behalf of the shareholders.
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Under the Articles of Association, Castellum’s Board is to consist of no less than four and no more than eight members. The current Board consists of seven ordinary members. The Board works in accordance with established rules of procedure, containing instructions on the allocation of work between the Board and the CEO. The disclosures concerning shareholding pertain to the conditions as of 18 July 2025. Shareholdings include members’ own holdings and those of spouses, minors and children living at home, holdings of associated companies and holdings through capital insurance.
Ralf Spann
Born
1975
Education
Master's degree in Business Administration from Humboldt University of Berlin.
Previous assignments
Head of Europe of Akelius Residential Property AB (publ), CEO of Akelius Real Estate Management LLC and Vice President Berlin at Akelius GmbH.
Current assignments
CEO and Head of Canada and a member of the board of Akelius Residential Property AB (publ).
Shareholding
-
Anna-Karin Celsing
Born
1962
Education
Master of Economics, Stockholm School of Economics.
Previous assignments
Extensive experience in banking, finance, and investor relations, and has served on several boards, including as Chair of SVT and as a board member of the Swedish Financial Supervisory Authority (Finansinspektionen), Carnegie, and Lannebo Fonder. She has also held the position of Head of Investor Relations at Swedbank and was part of the Group Management at Ratos as Head of Communications.
Current assignments
Board member of AKC Råd AB, Volati AB, Landshypotek Bank AB, Morrow Bank ASA, Peas Industries AB, KLOB i Stockholm AB, Svensk Husproduktion AB, Tim Bergling Foundation, the Orion Theatre Foundation, the Beckmans College of Design Foundation, and Dansens Hus.
Shareholding
5,500
Henrik Käll
Born
1967
Education
Master of Economics, Uppsala University, and studies at HEC.
Previous assignments
Lengthy background in banking and finance, in positions including global head of sales and trading at Nordea Markets. Previously also worked in London at the Natixis and Dresdner Kleinwort banks. Board member of Hoist Finance AB.
Current assignments
Chairman of the Board of Fxity AB and Garantum Fondkommission AB and Board member of Bellmer Capital AB and Nordend AB.
Shareholding
3,000
Marita Loft
Born
1960
Education
Master of Science in engineering, Real Estate Economics from KTH Royal Institute of Technology.
Previous assignments
CEO of Storebrand Fastigheter AB during 2012 and 2025, CEO and Board member of SPP Fastigheter AB during 2012 and 2025, Board member of Karlstad CCC between 2012 and 2021, Board member of Foran Real Estate 2012 and 2018 and Head of Real Estate Investments, SEB during 2008 and 2012.
Current assignments
Board member of Adoptionscentrum and Bengt Dahlberg Stockholm AB.
Shareholding
-
Leif Norburg
Born
1947
Education
Master of Science in Business and Economics from Lund University.
Previous assignments
CEO of Danske Bank Sweden and served as the Chairman of Akelius Residential Property AB (publ) during 2010–2018.
Current assignments
CEO and Board member of Lunor Konsult AB, Chairman of NorWess Fastighets AB and NorWess Holding AB and Board member of AHG Resources AB, AHG Redovisning AB and ArbetshälsaGruppen Sverige AB.
Shareholding
-
Knut Rost
Born
1959
Education
Master's degree in Real Estate from KTH Royal Institute of Technology.
Previous assignments
Senior positions at companies such as Castellum and ICA Fastigheter, and most recently as CEO of the property company Diös Fastigheter AB (publ).
Current assignments
Board member of Alecta Fastigheter AB and Nivika Fastigheter AB (publ) and Chair of Archus AB.
Shareholding
-
Stefan Wallander
Born
1974
Education
Master's degree in Finance from Stockholm School of Economics and University of Michigan's Ross School of Business.
Previous assignments
Partner, Head of Sweden and Group Chief Business Officer of Nrep/Urban Partners and CEO of Nrep AB. Stefan Wallander has also served as the Head of M&A and Corporate Development at
Modern Times Group (MTG). Prior to MTG Stefan spent twelve years in international investment banking at RBS, ABN AMRO and Credit Suisse.
Current assignments
Owner, investor and Board member of REIN Capital Partners AB and Board member of REIN Capital Invest AB, REIN Capital AB, REIN Capital Manager AB and i SIF I (E) AB.
Shareholding
1,623
