alstria achieves strong operating result in Q1/2010, balance sheet further strengthened Press release

alstria leases 4,800 sqm in Berlin

Hamburg, January 19, 2015 - alstria office REIT-AG (symbol: AOX, ISIN: DE000A0LD2U1), the leading German office REIT, announces the signature of a new lease for its asset in Darwinstrasse 14-18, Berlin.

The new tenant, a leading multimedia agency, signed an 11-year rental contract for approximately 4,800 sqm of office and ancillary space. The lease will start on December 1, 2015 and generate an annual rental income of EUR k 590.

'Following the recent 3,500 sqm lease in Munich, this new lease demonstrates once again alstria's ability to take advantage of the current strong leasing momentum in the German market', says Olivier Elamine, CEO of alstria. 'Our approach to offer the best value for money to prospective tenants has again proven to be leading to strong and fast results'.

About alstria:

alstria office REIT-AG is an internally managed Real Estate Investment Trust (REIT)

focused solely on acquiring, owning and managing office real estate in Germany. alstria was founded in January 2006 and was converted into the first German REIT in October

2007. Its headquarters are in Hamburg. The Company owns a diversified portfolio of

properties across attractive German office real estate markets. As of September 30, 2014 the portfolio comprised 74 properties with an aggregate lettable space of 884,500 sqm and is valued at approximately EUR 1.6 bn. The alstria office REIT-AG strategy is based on active asset and portfolio management as well as on establishing and maintaining good relationships with key customers and decision makers. alstria focuses on long-term real estate value creation.

Contact:

Ralf Dibbern, IR/PR

Phone: +49 (0) 40 226 341 329

Email: rdibbern@alstria.de

More information on: www.alstria.comwww.alstria.blogspot.comwww.twitter.com/alstria_REIT Disclaimer:

This release constitutes neither an offer to sell nor a solicitation of an offer to buy any shares. As far as this press release contains forward-looking statements with respect to the business, financial condition and results of operations of alstria office
REIT-AG (alstria), these statements are based on current expectations or beliefs of alstria's management. These forward- looking statements are subject to a number of risks and uncertainties that could cause actual results or performance of the Company to differ materially from those reflected in such forward-looking statements. Apart from other factors not mentioned here, differences could occur as a result of changes in the overall economic situation and the competitive environment -
especially in the core business segments and markets of alstria. Also, the development of the financial markets and changes in
national as well as international provisions particularly in the field of tax legislation and financial reporting standards could have an effect. Terrorist attacks and their consequences could increase the likelihood and the extent of differences. alstria undertakes no obligation to publicly release any revisions or updates to these forward-looking statements to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

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