Orion Oyj

Report Publication Announcement • May 20, 2013

Disclosure 307361

Orion - Company Announcement

225,000 Orion A-shares converted into B-shares

ORION CORPORATION STOCK EXCHANGE RELEASE 20 MAY 2013 at 09.15 a.m. EEST In accordance with Section 3 of the Articles of Association of Orion Corporation, 225,000 A-shares have been converted into 225,000 B-shares. The conversion has been entered into the Trade Register on 20 May 2013. The total number of shares in Orion Corporation is 141,257,828 which, after the conversion, consists of 42,310,318 A-shares and 98,947,510 B-shares. Orion Corporation Olli Huotari Jari Karlson SVP, Corporate Functions CFO Publisher: Orion Corporation Communications Orionintie 1A, FI-02200 Espoo, Finland Homepage: www.orion.fi Orion is a globally operating Finnish company developing pharmaceuticals and diagnostic tests - a builder of well-being. Orion develops, manufactures and markets human and veterinary pharmaceuticals, active pharmaceutical ingredients and diagnostic tests. The company is continuously developing new drugs and treatment methods. Pharmaceutical R&D focuses on central nervous system drugs, oncology and critical care drugs, and Easyhaler® pulmonary drugs. Orion's net sales in 2012 amounted to EUR 980 million and the company had about 3,500 employees. Orion's A and B shares are listed on NASDAQ OMX Helsinki. [HUG#1703049]