 SANTA FE, NM ACCESSWIRE March 26, 2021 Sigma Labs, Inc. NASDAQ:SGLB Sigma Labs or the Company, a leading developer of quality assurance software for the commercial metal 3D printing industry, today announced the closing of its previously announced registered direct offering of 2,190,000 of its shares of common stock priced at-the-market under Nasdaq rules. Additionally, Sigma Labs also issued to the investors short-term warrants to purchase up to an aggregate of 2,190,000 shares of common stock in a concurrent private placement. 