Proto Labs (NYSE:PRLB) reported quarterly earnings of $0.54 per share which beat the analyst consensus estimate of $0.39 by 38.46 percent. This is a 63.64 percent increase over earnings of $0.33 per share from the same period last year. The company reported quarterly sales of $139.336 million which beat the analyst consensus estimate of $135.143 million by 3.10 percent. This is a 10.40 percent increase over sales of $126.205 million the same period last year.