 DUBLIN, Ireland, July 29, 2021 GLOBE NEWSWIRE -- Prothena Corporation plc NASDAQ:PRTA, a late-stage clinical company with a robust pipeline of novel investigational therapeutics built on protein dysregulation expertise, announced today that it will report its second quarter and first six months of 2021 financial results on Thursday, August 5, 2021 after the close of the U.S. financial markets. 