Proto Labs (NYSE:PRLB) reported quarterly earnings of $0.44 per share which beat the analyst consensus estimate of $0.34 by 28.28 percent. This is a 15.79 percent increase over earnings of $0.38 per share from the same period last year. The company reported quarterly sales of $136.493 million which beat the analyst consensus estimate of $129.070 million by 5.75 percent. This is a 12.11 percent increase over sales of $121.750 million the same period last year.