SIGMA LITHIUM SUBSTANTIALLY INCREASES TOTAL NI 43-101 MINERAL RESOURCE BY ~50% TO 86 MILLION TONNES, ADDING 27 MILLION TONNES OF HIGH-GRADE 1.49% LITHIUM OXIDE IN PHASE 3

ADDITION OF PHASE 3 INCREASES TOTAL MINERAL RESOURCE Substantial increase in estimated mineral resources strengthens the position of Sigma Lithium’s Grota do Cirilo Project (the “Project”) as the largest and highest quality hard rock environmentally and socially sustainable battery grade…