SIGMA LITHIUM CORPORATION NOTICE OF CHANGE OF AUDITOR Form 6 K

SIGMA LITHIUM CORPORATION

NOTICE OF CHANGE OF AUDITOR

TO:	KPMG Auditores Independentes Ltda.

AND TO:

Grant Thornton Auditores Independentes Ltda.

AND TO:

Ontario Securities Commission (Principal Regulator) British Columbia Securities Commission

Alberta Securities Commission

Saskatchewan Financial and Consumer Affairs Authority

The Manitoba Securities Commission

Financial and Consumer Services Commission, New Brunswick

Nova Scotia Securities Commission

Office of the Superintendent of Securities, Prince Edward Island

Office of the Superintendent of Securities, Government of Newfoundland and Labrador

Office of the Superintendent of Securities, Northwest Territories Office of the

Superintendent of Securities, Nunavut

Office of the Yukon Superintendent of Securities

Sigma Lithium Corporation (the "Company") hereby provides notice pursuant to section 4.11 of National Instrument 51-102 - Continuous Disclosure Obligations ("NI 51-102") of the change of its auditor from KPMG Auditores Independentes Ltda. (the "Former Auditors") to Grant Thornton Auditores Independentes Ltda. (the "Successor Auditors"). In accordance with NI 51-102, the Company hereby states that:

(i)	the Former Auditors were not proposed for re-appointment at the annual and special meeting of shareholders of the Company held on July 9, 2024 and were therefore terminated for the purposes of NI 51-102;

(ii)	The termination of the Former Auditors and the appointment of the Successor Auditors has been considered and was approved by the Company's audit committee and board of directors;

(iii)

During the term of the Former Auditors' appointment as Auditors for the Company, the Former Auditors did not deliver an audit report to the Company's board of directors which contained a modified opinion; and

(iv)	There have been no "reportable events" as that term is defined in NI 51-102.

Dated July 10, 2024.

SIGMA LITHIUM CORPORATION

"Ana Cristina Cabral"		"Caio Araujo"
Ana Cristina Cabral		Caio Araujo
Chief Executive Officer		Chief Financial Officer

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