Continued good growth in income from property management and positive net leasing

   * Rental income for the period January-June 2012 amounted to SEKm 1,521 (SEKm
     1,447 corresponding period previous year).
   * Income from property management amounted to SEKm 606 (555), corresponding to
     SEK 3.70 (3.38) per share, an increase with 9%.
   * The changes in value on properties amounted to SEKm 28 (388) and on interest
     rate derivatives to SEKm 109 (67).
   * Net income after tax for the period amounted to SEKm 580 (757),
     corresponding to SEK 3.54 (4.62) per share.
   * Net investments amounted to SEKm 735 (738) of which SEKm 613 (528) were new
     constructions, extensions and reconstructions.

Gross leasing during the period was SEKm 154 (189), of which SEKm 25 (38) were
leasing of new constructions, extensions and reconstructions. Notices of
termination amounted to SEKm 141 (132), of which bankruptcies were SEKm 14 (7)
and SEKm 17 (4) were notices of termination with more than 18 months remaining
length of contract. Hence net leasing for the period was SEKm 13 (57) of which
SEKm 21 (36) relates to the second quarter isolated.

"Castellum shows a continued growth in income from property management and it is
pleasant to present positive net leasing after two quarters with downward trend"
comments CEO Håkan Hellström. "Castellums continues to develop and invest in
major Swedish cities. The project portfolio has a positive development both
concerning started projects as well as demand", Hellström adds.

Enclosure: Half-year Report January-June 2012

For further information, please contact
Håkan Hellström, CEO, phone +46 31 60 74 00 / mobile +46  705-60 74 56
Ulrika Danielsson, Finance Director, phone +46 31 60 74 00 / mobile
+46  706-47 12 61

Castellum is one of the major listed real estate companies in Sweden. The fair
value of the real estate portfolio amounts to SEK 35 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.

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 Source: Castellum AB (publ) via Thomson Reuters ONE