Castellum AB

Castellum AB (publ) is a Swedish property company that owns, manages, and develops commercial properties in growth cities. As of 30 June 2026, its property value was approximately SEK 134 billion. The company is listed on Nasdaq Stockholm Large Cap and is classified as green under the Green Equity Designation. Castellum is the only Swedish property company included in the Dow Jones Sustainability Indices. It was incorporated in Sweden.