Sigma Labs, Inc.: Sigma Labs Issues CEO Letter Global Acceleration of 3D Metal Printing, Recent Funding and Newly Added Resources Position Company to Leverage Worldwide Distribution Partnerships SANTA FE, NM / ACCESSWIRE / January 28, 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 issued a shareholder letter from its President and CEO Mark K. Ruport. Dear Fellow Shareholders, 2020 was an incredibly taxing year for everyone, and we hope that you were able to take some time during the holidays to spend it directly or virtually with your family and friends. It was a year that was dominated by the global COVID-19 pandemic and its effects, short-term and long-term, on the economy, our industry and Sigma Labs. Despite these challenges, and the previously discussed impact on our short-term revenue, we executed our plan and achieved almost every major milestone we established going into the year, positioning the Company for what we believe will be a successful and exciting future.