PRLB - Proto Labs (PRLB) Q1 2022 Earnings Call Transcript May, 06 2022 06:00 PM Proto Labs Inc. Image source: The Motley Fool. Proto Labs (NYSE: PRLB) Q1 2022 Earnings Call May 06, 2022 , 8:30 a.m. ET Operator Continue reading For further details see: Proto Labs (PRLB) Q1 2022 Earnings Call Transcript