Castellum AB (publ): Base prospectus due to the MTN-program is now available on www.castellum.se

1 juni 2012 As of June 1, 2012 the Swedish Financial Supervisory Authority has approved and registered Castellum AB's established prospectus due to the company's Medium Term Note-program. The base prospectus is now available in Swedish on the company's webpage. For further information, please contact Håkan Hellström, CEO, phone +46 31 60 74 00 / mobile +46  705-60 74 56 Anette Asklin, Financial director, phone +46 31 60 74 00 / mobile +46 706 64 97 17 www.castellum.se Castellum is one of the major listed real estate companies in Sweden. The fair value of the real estate portfolio amounts to SEK 34 billion, and comprises premises for office, retail, warehouse and industrial purposes with a total lettable area of 3.4 million sq.m. The real estate portfolio is owned and managed by six wholly owned subsidiaries with strong local roots in five growth regions: Greater Gothenburg, the Öresund Region, Greater Stockholm, Mälardalen and Eastern Götaland. Castellum is listed on NASDAQ OMX Stockholm AB Large Cap. Castellum AB (publ) discloses the information provided herein pursuant to the Securities Markets Act and/or the Financial Instruments Trading Act. Press release 9/2012: http://hugin.info/1042/R/1616682/515663.pdf This announcement is distributed by Thomson Reuters on behalf of Thomson Reuters clients. The owner of this announcement warrants that: (i) the releases contained herein are protected by copyright and other applicable laws; and (ii) they are solely responsible for the content, accuracy and originality of the information contained therein. Source: Castellum AB (publ) via Thomson Reuters ONE [HUG#1616682]