Castellum AB is a Sweden‐based real estate company specializing in the ownership, management and development of commercial properties. The company’s primary focus is on office premises and logistics facilities situated in attractive growth regions across Sweden and the broader Öresund area. With a strategic emphasis on long‐term leases and strong tenant relationships, Castellum aims to deliver stable rental income and capital appreciation over time.
Founded in 1940 and headquartered in Gothenburg, Castellum has grown through a combination of land acquisitions, property development and selective portfolio divestments. Its property holdings span major urban centers, including Stockholm, Gothenburg and Malmö, as well as smaller but economically vibrant regional markets. In recent years, the company has also extended its footprint into the Copenhagen metropolitan area to capitalize on cross‐border economic synergies.
Environmental sustainability is a core component of Castellum’s business model. The company integrates green building principles into new developments and undertakes energy‐efficiency upgrades in existing assets. Many of its properties carry certifications such as BREEAM or LEED, reflecting a commitment to reducing carbon emissions and improving tenant well‐being. Castellum also leverages digitalization in property management, employing smart building solutions to optimize operational performance.
Governed by a board of directors chaired by Jonas Wiström and led operationally by CEO Henrik Saxborn, Castellum pursues a disciplined approach to growth and risk management. Its depositary receipts trade on the NYSE American market under the symbol CTM, offering international investors access to one of Sweden’s largest listed real estate platforms.
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