SIGMA LITHIUM ACHIEVES OUTSTANDING PROJECT EXPANSION AND FINANCING MILESTONES: INCREASES MINERAL RESERVES BY 63%, TRIPLES NPV TO US$ 15.3 BILLION AND SECURES US$ 100 MILLION DEBT FINANCING

INVESTOR VIDEO CONFERENCE CALL December 6, 2022 at 10AM (EST) Registration Link for Zoom video call below: https://us06web.zoom.us/j/83014247697 Zoom Meeting ID: 830 1424 7697 HIGHLIGHTS OF PLANNED PRODUCTION EXPANSION Sigma Lithium announces positive economic results of its study to...