SGMA Sigma Lithium Corporation

Sigma Lithium Resources Corporation (the “Company”) (TSX-V: SGMA) (OTCQB: SGMLF) is issuing this news release as a result of the Investment Industry Regulatory Organization of Canada review of the Company’s news release dated October 1st 2019 (the “October 1 Release”) to retract the EBITDA disclosure in such news release and to include after-tax net income. The Company is retracting any references to EBITDA and net revenue, as EBITDA is a non-GAAP financial measure used to measure corporate performance, and not project performance, and after-tax net income should be included if net income is included.

The forecasted after tax life of mine net income for the Xuxa project is US$469 million.

For Additional Information Please Contact:

Betty LeBlancDirector of Corporate Communications Tel: + 1 604 828-0999betty.leblanc@sigmaca.com

Ana CabralChief Strategy Officer Tel: + 55 11 2985-0089ana.cabral@sigmaca.com

Sigma Lithium Resources Corporation www.sigmalithiumresources.com

Forward-Looking Statements

Please refer to the heading “Forward-Looking Statements” in the October 1 Release.