Prothena Corp (NASDAQ:PRTA) reported quarterly earnings of $0.36 per share which beat the analyst consensus estimate of $(0.09) by 500 percent. This is a 120.81 percent increase over losses of $(1.73) per share from the same period last year. The company reported quarterly sales of $1.010 million which missed the analyst consensus estimate of $28.295 million by 96.43 percent. This is a 77.15 percent decrease over sales of $4.420 million the same period last year.