Management Information Circular, related to the Annual General and Special Meeting of Shareholders Annual Information Form 2021 Sigma Lithium Full Year MD&A 2021 Sigma Lithium Full Year 2021 Financial Statements Sigma Lithium Full Year 2020 MD&A Annual Information Form 2020 Sigma Lithium Full Year 2020 Financial Statements Sigma Lithium Full Year 2019 Financial Statements Sigma Lithium Full Year 2019 MD&A Sigma Lithium Full Year 2018 Financial Statements