Ablynx Release: Publication in Accordance With Article 14 of the Belgian Law of 2 May 2007 Regarding the Publication of Major Shareholdings

GHENT, BELGIUM--(Marketwire - April 27, 2012) - REGULATED INFORMATION

GHENT, Belgium, 27 April 2012 - Ablynx (EURONEXT BRUSSELS: ABLX) today announced, in accordance with Article 14 of the Belgian Law of 2 May 2007 regarding the publication of major shareholdings in issuers whose securities are admitted to trading on a regulated market (the “Transparency Law”), that it received a notification of shareholdings from vzw VIB.

The above shareholder now owns less than 3% in Ablynx.

Full versions of all transparency notifications are available on the website of Ablynx, section Investors.

About Ablynx

Ablynx is a biopharmaceutical company engaged in the discovery and development of Nanobodies(®), a novel class of therapeutic proteins based on single-domain antibody fragments, for a range of serious and life-threatening human diseases, including inflammation, haematology, oncology and pulmonary disease. Today, the Company has over 25 programmes in the pipeline and seven Nanobodies at clinical development stage. Ablynx has ongoing research collaborations and significant partnerships with major pharmaceutical companies, including Boehringer Ingelheim, Merck Serono and Novartis. The Company is headquartered in Ghent, Belgium. More information can be found on www.ablynx.com.

Complete version of the press release: http://hugin.info/137912/R/1607016/509633.pdf

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Source: Ablynx via Thomson Reuters ONE

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