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Sigma Lithium Regulatory Filings 2021

Jul 16, 2021

46936_rns_2021-07-15_c4d6163b-3d7c-41e9-ab7d-5e5754a0fcad.pdf

Regulatory Filings

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CONSENT OF QUALIFIED PERSON MARC-ANTOINE LAPORTE

SGS Geological Services 4321 Still Creek Drive in Burnaby, British Columbia Canada

I, Marc-Antoine Laporte, P.Geo., consent to the public filing of the technical report titled “ Grota do Cirilo Lithium Project Araçuaí and Itinga Regions, Minas Gerais, Brazil Phase 2 (Barreiro) Update of the NI 43-101 Technical Report on Feasibility Study ”, with an effective date of June 2, 2021 (the “ Technical Report ”) by Sigma Lithium Corporation (the “ Issuer ”).

Signed and dated this July 15, 2021, at Quebec City, Quebec.

“Signed and sealed” Marc-Antoine Laporte, P.Geo., M.Sc

Marc-Antoine Laporte, P.Geo., Project Geologist SGS Geological Services

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Sigma Lithium — Regulatory Filings 2021

46936_rns_2021-07-15_c4d6163b-3d7c-41e9-ab7d-5e5754a0fcad.pdf

CONSENT OF QUALIFIED PERSON MARC-ANTOINE LAPORTE

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Sigma Lithium Regulatory Filings 2021