DUBLIN, Ireland, Oct. 3, 2013 (GLOBE NEWSWIRE) -- Prothena Corporation plc. (Nasdaq:PRTA), a clinical stage biotechnology company focused on the discovery and development of novel antibodies for the potential treatment of a broad range of diseases, announced that it has priced an underwritten public offering of 5,910,000 of its ordinary shares at a price of $22.00 per ordinary share, before underwriting discounts and commissions. Of these ordinary shares, Prothena is offering 3,500,000 ordinary shares and Janssen Pharmaceutical, a wholly owned subsidiary of Johnson & Johnson, as selling shareholder, is offering 2,410,000 ordinary shares. In addition, the underwriters have been granted a 30-day option to purchase up to an additional 886,500 ordinary shares. If the option is exercised in full, Prothena will issue and sell an additional 677,079 ordinary shares and Janssen Pharmaceutical will sell an additional 209,421 ordinary shares, which represents all of Janssen’s shareholdings in Prothena.
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