Generation Bio (NASDAQ:GBIO) reported quarterly losses of $(3.12) per share which missed the analyst consensus estimate of $(2.62) by 19.08 percent. This is a 906.45 percent decrease over losses of $(0.31) per share from the same period last year. The company reported quarterly sales of $765.000 thousand which missed the analyst consensus estimate of $2.139 million by 64.23 percent. This is a 81.30 percent decrease over sales of $4.091 million the same period last year.