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