Prothena Corporation plc
Mar 21, 2013

Prothena to Report Fourth Quarter and Full Year 2012 Financial Results and Host Webcast and Conference Call on March 28, 2013

DUBLIN, Ireland, March 21, 2013 (GLOBE NEWSWIRE) -- Prothena Corporation plc (Nasdaq:PRTA), a biotechnology company focused on the discovery and development of novel antibodies for the potential treatment of a broad range of diseases, today announced that it will report its fourth quarter and full year 2012 financial results on Thursday, March 28, 2013, after the close of the U.S. financial markets.  The announcement will be followed by a conference call and live audio webcast at 4:30 p.m. EDT.

The conference call and live audio webcast can be accessed as follows:
Dial-in:  (877) 312-5854 (U.S. toll free) or (408) 774-4003 (international)
Conference ID Number:  24106806
Webcast:  http://ir.prothena.com

A replay of the webcast will be available until April 4, 2013 via dial-in to (855) 859-2056 (U.S. toll free) or (404) 537-3406 (international), Conference ID Number 24106806, or via webcast on the investor relations section of Prothena's website at http://ir.prothena.com.

About Prothena

Prothena Corporation plc (Nasdaq:PRTA) is a biotechnology company focused on the discovery and development of novel antibodies for the potential treatment of a broad range of diseases that involve protein misfolding or cell adhesion, particularly on the discovery and development of potential therapeutic monoclonal antibodies directed specifically to disease-causing proteins. These potential therapies have a broad range of indications, including AL and AA forms of amyloidosis, Parkinson's disease and related synucleinopathies, and novel cell adhesion targets involved in inflammatory disease and metastatic cancers. For more information, please visit www.prothena.com.

CONTACT: Anita Kawatra

         Prothena Corporation

         646-256-5116

         anita.kawatra@prothena.com