Sigma Labs, Inc. (SGLB) Reports Q3 Loss, Tops Revenue Estimates Posted byZacks Equity Research October 21, 2021 Leave a comment on Sigma Labs, Inc. (SGLB) Reports Q3 Loss, Tops Revenue Estimates Sigma Labs, Inc. (SGLB) delivered earnings and revenue surprises of -100.00% and 10.41%, respectively, for the quarter ended September 2021. Do the numbers hold clues to what lies ahead for…