 Accomplished Additive Manufacturing Executive Strengthens In-Process Quality Assurance Product Development and Commercialization Programs SANTA FE, NM ACCESSWIRE September 20, 2021 Sigma Labs, Inc. NASDAQ:SGLB Sigma Labs or the Company, a leading developer of quality assurance software to the commercial 3D metal printing industry, today announced the appointment of Jacob Brunsberg as Senior Vice President. In this role, Mr. 