X0306 4 2019-07-18 0 0000788611 SIGMA LABS, INC. SGLB 0001698204 Rice John Reynolds 3900 PASEO DEL SOL SANTA FE NM 87507 1 1 0 0 President and CEO Stock Option (right to buy) 1.4 2019-07-18 4 A 0 22916 0 A 2019-07-18 2024-06-30 Common Stock 22916 22916 D The option grant was previously approved by a committee of the Issuer's Board of Directors, subject to stockholder approval of an amendment to the Issuer's equity incentive plan under which the option was granted. The Issuer's stockholders approved the amendment on July 18, 2019. /s/ John Rice 2019-07-22