9% growth in income from property management

   * Rental income for the period January-March 2012 amounted to SEKm 753 (SEKm
     717 corresponding period previous year).
   * Income from property management amounted to SEKm 273 (250), corresponding to
     SEK 1.66 (1.52) per share, an increase with 9%.
   * The changes in value on properties amounted to SEKm 10 (97) and on interest
     rate derivatives to SEKm 206 (171).
   * Net income after tax for the period amounted to SEKm 362 (394),
     corresponding to SEK 2.21 (2.40) per share.
   * Net investments amounted to SEKm 323 (419) of which SEKm 307 (244) were new
     constructions, extensions and reconstructions.

The net leasing during the period amounted to SEKm -8 (21). The gross leasing
during the period was SEKm 73 (75), of which SEKm 10 (12) were leases for new
constructions, extensions and reconstructions. Notices of termination amounted
to SEKm 81 (54), of which bankruptcies were SEKm 6 (4) and SEKm 14 (1) were
notices of termination with at least 18 months remaining length of contract.

"We can't be anything but pleased with the growth in property management, even
if net leasing shows a downward trend" CEO Håkan Hellström says in a comment.
"Leasing volume remains high, but during the past quarters we have noted the
tendency of more customers terminating contracts earlier and earlier before they
expire - resulting in longer times for leasing to new customers", Hellström
adds.

Enclosure: Interim Report January-March 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

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.

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      originality of the information contained therein. 
     
 Source: Castellum AB (publ) via Thomson Reuters ONE