GROTA DO CIRILO LITHIUM PROJECT ARAÇUAÍ AND ITINGA REGIONS, MINAS GERAIS, BRAZIL AMENDED AND RESTATED TECHNICAL REPORT Prepared for: Sigma Lithium Corporation Prepared by: Homero Delboni Jr., MAusIMM (CP), HDA Serviços S/S Ltda. Marc-Antoine Laporte, P.Geo, SGS Canada Inc Jarrett Quinn, P.Eng., Consulting Process Engineer Porfirio Cabaleiro Rodriguez, (MEng), FAIG, GE21 Consultoria Mineral Noel O'Brien, FAusIMM, Trinol Pty Ltd. Effective Date: 31 October 2022 Issue Date: 12 June 2023 NI DO IMPORTANT NOTICE ...