New Global Customer Wins Drive Improved Financial Performance for Revenue & Gross Margins Management to Host Conference Call Today at 4:30 p.m. ET SANTA FE, NM / ACCESSWIRE / April 22, 2021 /Sigma Labs, Inc. (NASDAQ:SGLB) ('Sigma Labs' or the 'Company'), a leading developer of quality assurance software for the commercial 3D metal printing industry, has reported its financial and operational results for the first quarter ended March 31, 2021. Key First Quarter and Subsequent Operational Highlights Improved financial performance with revenue increasing by more than 100% over both Q1 2020 and Q4 2020, to $0.5 million. Enhanced gross margin, resulting in gross profit before operating expenses of $0.3 million for the quarter.