Castellum publishes prospectus This press release may not

This press release may not be announced, published or distributed, in whole or in part, directly or indirectly, in the United States, Canada, Japan, Australia, Hong Kong, New Zealand, Singapore, South Africa or any other country where such publication or distribution would violate applicable laws or rules or would require additional documents to be prepared or registered or require any other actions to be taken, in addition to the requirements under Swedish law. This press release is not a prospectus. For further information, please refer to “Important notice” in this press release. N.B. This press release has been published in Swedish and English. In the event of any discrepancy between these two versions, the Swedish version shall prevail. Castellum AB (publ) announced on 13 April, 2016, that the Board of Directors had resolved to, subject to the approval by the Extraordinary General Meeting, launch a fully underwritten rights issue with preferential rights for Castellum’s shareholders (the “Rights issue”) in order to finance part of the acquisition of all shares in Norrporten AB (publ). The Rights issue was approved by the Extraordinary General Meeting on 20 May, 2016. The prospectus has today been approved and registered by the Swedish Financial Supervisory Authority and is now available on Castellum’s website: www.castellum.se. The prospectus and the application form can be obtained from Castellum and Carnegie Investment Bank AB (publ). The prospectus and the application form will also be available on Castellum’s website (www.castellum.se) as well as Carnegie Investment Bank AB’s (publ) website (www.carnegie.se). FINANCIAL AND LEGALA ADVISORS IN RELATION TO THE RIGHTS ISSUE Carnegie Investment Bank AB (publ), Handelsbanken Capital Markets, HSBC Bank plc, Skandinaviska Enskilda Banken AB (publ), and Swedbank AB (publ) are Joint Global Coordinators and Joint Bookrunners in relation to the Rights issue. Gernandt & Danielsson Advokatbyrå KB is legal advisor to Castellum and Linklaters is legal advisor to Joint Global Coordinators and Joint Bookrunners. For additional information, please contact: Henrik Saxborn, CEO, Tel +46-31-60 74 50 Ulrika Danielsson, CFO, Tel +46-31-60 74 74 www.castellum.se Castellum AB (publ) publishes this information in compliance with the Swedish Securities Market Act and/or the Swedish Act on Trading in Financial Instruments. This information was announced on May 25, 2016, at 6.45 pm (CET). Castellum is one of the major listed real estate companies in Sweden. The fair value of the real estate portfolio, prior to the contemplated acquisition of Norrporten, amounts to approx. SEK 45 billion, and comprises premises for office, retail, warehouse and industrial purposes with a total lettable area of approx. 3.6 million sq.m. After the acquisition of Norrporten, Castellum’s real estate portfolio will increase by 60 percent to SEK 71 billion, as per pro forma March 31, 2016. After acquiring Norrporten, Castellum will own and manage properties through one common brand in five geographical regions with strong local presence. The five geographical regions are: West, Öresund, Stockholm, North and Central. In 2015, Castellum sustainability performance was awarded two top distinctions: the World Green Building Council’s award Business Leadership in Sustainability and “Green Star 2015” by GRESB. This means that Castellum is one of the highest ranking companies in the world in the real estate sector. The Castellum share is listed on Nasdaq Stockholm Large Cap. Castellum AB (publ), Box 2269, SE-403 14 Gothenburg | Org nr/Corp Id no SE 556475-5550 | Phone +46 31 60 74 00 Fax +46 31 13 17 55 IMPORTANT INFORMATION This press release does not contain or constitute an invitation or an offer to acquire, sell, subscribe for or otherwise trade in shares, subscription rights or other securities in Castellum. Invitation to the persons concerned to subscribe for shares in Castellum will only be made through the prospectus referred to in this press release. The prospectus contains, among other things, risk factors, financial statements as well as information regarding the company’s board of directors. This press release has not been approved by any regulatory authority and is not a prospectus and accordingly, investors should not subscribe for or purchase any securities referred to in this press release except on the basis of information provided in the prospectus referred to in this press release. In certain jurisdictions, the publication or distribution of this press release may be subject to restrictions according to law and persons in those jurisdictions where this press release has been published or distributed should inform themselves about and abide by such restrictions. This press release is not directed to persons located in Canada, Japan, Australia, Hong Kong, New Zealand, Singapore, South Africa or in any other country where the offer or sale of the subscription rights, paid subscribed shares (Sw. betalda tecknade aktier) or new shares is not permitted. In the United States (including its territories and possessions, any state of the United States and the District of Columbia) any offering will only be of subscription rights and paid subscribed shares (Sw. betalda tecknade aktier) made by the Company to a limited number of existing shareholders who are reasonably believed to be qualified institutional buyers (as defined in Rule 144a under the US Securities Act of 1933, as amended (the “Securities Act”) pursuant to an exemption from registration under the Securities Act in a transaction not involving any public offering and who have executed and returned an investor letter to the Company. This press release may not be announced, published or distributed, directly or indirectly, in or into Canada, Japan, Australia, Hong Kong, New Zealand, Singapore, South Africa or any other country where such action is wholly or partially subject to legal restrictions or where such action would require additional prospectuses, other offer documentation, registrations or other actions in addition to what follows from Swedish law. The information in this press release may not be forwarded, reproduced or disclosed in such a manner that would contravene such restrictions or would require such additional prospectuses, other offer documentation, registrations or other actions. Failure to comply with this instruction may result in a violation of the Securities Act or laws applicable in other jurisdictions. No subscription rights, paid subscribed shares or new shares have been or will be registered under the Securities Act, or with any other securities regulatory authority of any state or other jurisdiction of the United States and no subscription rights, paid subscribed shares or new shares may be offered, sold, resold, transferred, delivered or distributed, directly or indirectly, into or within the United States other than pursuant to an exemption from, or in a transaction not subject to the registration requirements of the Securities Act, and in compliance with any applicable securities laws of any state or jurisdiction of the United States. No public offering of subscription rights, paid subscribed shares or new shares is made in the United States. There is no intention to register any securities referred to herein in the United States or to make a public offering in the United States. This press release contains forward-looking statements which reflect Castellum’s current view on future events and financial and operational development. Words such as “intend”, “will”, “expect”, “anticipate”, “may”, “plan”, “estimate” and other expressions than historical facts which imply indications or predictions of future development or trends, constitute forward-looking statements. Forward -looking statements inherently involve both known and unknown risks and uncertainties as they depend on future events and circumstances. Forward-looking statements do not guarantee future results or development and the actual outcome could differ materially from the forward-looking statements. The information, opinions and forward-looking statements concluded in this announcement speak only as of its date and are subject to change without notice.