6-K

UNITEDSTATES****SECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TORULE 13a-16 OR

15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of July 2024

Commission File Number: 001-40786

SigmaLithium Corporation

(Translation of registrant's name into English)

2200 HSBC Building

885 West Georgia Street

Vancouver, British Columbia

V6C3E8

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ¨      Form 40-F x

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ¨

**Note:**Regulation S-T Rule 101(b)(1) only permits the submission in paper of a Form 6-K if submitted solely to provide an attached annual report to security holders.

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ¨

**Note:**Regulation S-T Rule 101(b)(7) only permits the submission in paper of a Form 6-K if submitted to furnish a report or other document that the registrant foreign private issuer must furnish and make public under the laws of the jurisdiction in which the registrant is incorporated, domiciled or legally organized (the registrant's "home country"), or under the rules of the home country exchange on which the registrant's securities are traded, as long as the report or other document is not a press release, is not required to be and has not been distributed to the registrant's security holders, and, if discussing a material event, has already been the subject of a Form 6-K submission or other Commission filing on EDGAR.

EXHIBIT INDEX

Exhibit	Description
99.1	Notice<br> of Change of Auditor dated July 10, 2024.
99.2	Letter<br> from Successor Auditor dated July 11, 2024.
99.3	Letter<br> from Predecessor Auditor dated July 12, 2024

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	Sigma Lithium Corporation
	(Registrant)
Date: July 12, 2024
	Ana Cristina Cabral Gardner
	Chief Executive Officer

Exhibit 99.1

SIGMA LITHIUM CORPORATION

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NOTICE OF CHANGE OF AUDITOR

TO:	KPMG Auditores Independentes Ltda.
AND TO:	Grant Thornton Auditores Independentes Ltda.
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AND TO:	Ontario Securities Commission (Principal Regulator)<br><br> <br>British Columbia Securities Commission
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Alberta Securities Commission

Saskatchewan Financial and Consumer Affairs Authority

TheManitoba Securities Commission

Financial and Consumer Services Commission, New Brunswick

Nova Scotia Securities Commission

Office of the Superintendent of Securities, Prince EdwardIsland

Office of the Superintendent of Securities, Governmentof Newfoundland and Labrador

Office of the Superintendent of Securities, Northwest TerritoriesOffice 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 (“NI51-102”) 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<br>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<br>and was approved by the Company’s audit committee and board of directors;
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(iii)	During the term of the Former Auditors’ appointment as Auditors for the Company, the Former Auditors<br>did not deliver an audit report to the Company’s board of directors which contained a modified opinion; and
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(iv)	There have been no “reportable events” as that term is defined in NI 51-102.
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Dated July 10, 2024.

SIGMA LITHIUM CORPORATION

“Ana Cristina Cabral”	“Caio Araujo”
Ana Cristina Cabral	Caio Araujo
Chief Executive Officer	Chief Financial Officer
Certificado de Conclusão<br>Identificação de envelope: 8016EEEB737042C092877B5CA1E95CC1 Status: Concluído<br>Assunto: Complete com o Docusign: Sigma Lithium Corporation - Notice of change of auditors 2024<br>Envelope fonte:<br>Documentar páginas: 1 Assinaturas: 2 Remetente do envelope:<br>Certificar páginas: 8 Rubrica: 0 Legal Sigma<br>Assinatura guiada: Ativado<br>Selo com EnvelopeId (ID do envelope): Ativado<br>Fuso horário: (UTC) Dublin, Edimburgo, Lisboa, Londres<br>, 01407200<br>legal@sigmalithium.com.br<br>Endereço IP: 177.145.82.31<br>Rastreamento de registros<br>Status: Original<br> 11/07/2024 00:27:43<br>Portador: Legal Sigma<br> legal@sigmalithium.com.br<br>Local: DocuSign<br>Eventos do signatário Assinatura Registro de hora e data<br>Ana Cabral<br>anacg-approvals@sigmalithium.com.br<br>Nível de segurança: E-mail, Autenticação da conta<br>(Nenhuma)<br>Adoção de assinatura: Estilo pré-selecionado<br>Usando endereço IP: 177.174.116.109<br>Assinado com o uso do celular<br>Enviado: 11/07/2024 00:30:36<br>Visualizado: 11/07/2024 20:29:58<br>Assinado: 11/07/2024 20:30:03<br>Termos de Assinatura e Registro Eletrônico:<br> Aceito: 24/05/2023 23:55:51<br> ID: e01d7ba4-684b-4f22-805c-53209039b229<br>Caio Araujo<br>caio.araujo@sigmalithium.com.br<br>Nível de segurança: E-mail, Autenticação da conta<br>(Nenhuma)<br>Adoção de assinatura: Estilo pré-selecionado<br>Usando endereço IP: 200.206.57.18<br>Enviado: 11/07/2024 00:30:36<br>Visualizado: 11/07/2024 15:41:40<br>Assinado: 11/07/2024 15:41:48<br>Termos de Assinatura e Registro Eletrônico:<br> Aceito: 11/07/2024 15:41:40<br> ID: 4840e29a-ff1f-4432-8e07-1e0ce10c34c0<br>Eventos do signatário presencial Assinatura Registro de hora e data<br>Eventos de entrega do editor Status Registro de hora e data<br>Evento de entrega do agente Status Registro de hora e data<br>Eventos de entrega intermediários Status Registro de hora e data<br>Eventos de entrega certificados Status Registro de hora e data<br>Eventos de cópia Status Registro de hora e data<br>Isabella Pina<br>isabella.pina@sigmalithium.com.br<br>Nível de segurança: E-mail, Autenticação da conta<br>(Nenhuma)<br>Copiado Enviado: 11/07/2024 00:30:36<br>Visualizado: 11/07/2024 20:31:16<br>Termos de Assinatura e Registro Eletrônico:<br> Não oferecido através do DocuSign
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Eventos de cópia Status Registro de hora e data<br>Paula Lacava<br>paula.lacava@sigmalithium.com.br<br>Nível de segurança: E-mail, Autenticação da conta<br>(Nenhuma)<br>Copiado Enviado: 11/07/2024 00:30:37<br>Termos de Assinatura e Registro Eletrônico:<br> Não oferecido através do DocuSign<br>Eventos com testemunhas Assinatura Registro de hora e data<br>Eventos do tabelião Assinatura Registro de hora e data<br>Eventos de resumo do envelope Status Carimbo de data/hora<br>Envelope enviado Com hash/criptografado 11/07/2024 00:30:37<br>Entrega certificada Segurança verificada 11/07/2024 15:41:40<br>Assinatura concluída Segurança verificada 11/07/2024 15:41:48<br>Concluído Segurança verificada 11/07/2024 20:30:03<br>Eventos de pagamento Status Carimbo de data/hora<br>Termos de Assinatura e Registro Eletrônico
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ELECTRONIC RECORD AND SIGNATURE DISCLOSURE<br>From time to time, Roberto Coelho (we, us or Company) may be required by law to provide to<br>you certain written notices or disclosures. Described below are the terms and conditions for<br>providing to you such notices and disclosures electronically through the DocuSign system.<br>Please read the information below carefully and thoroughly, and if you can access this<br>information electronically to your satisfaction and agree to this Electronic Record and Signature<br>Disclosure (ERSD), please confirm your agreement by selecting the check-box next to ‘I agree to<br>use electronic records and signatures’ before clicking ‘CONTINUE’ within the DocuSign<br>system.<br>Getting paper copies<br>At any time, you may request from us a paper copy of any record provided or made available<br>electronically to you by us. You will have the ability to download and print documents we send<br>to you through the DocuSign system during and immediately after the signing session and, if you<br>elect to create a DocuSign account, you may access the documents for a limited period of time<br>(usually 30 days) after such documents are first sent to you. After such time, if you wish for us to<br>send you paper copies of any such documents from our office to you, you will be charged a<br>$0.00 per-page fee. You may request delivery of such paper copies from us by following the<br>procedure described below.<br>Withdrawing your consent<br>If you decide to receive notices and disclosures from us electronically, you may at any time<br>change your mind and tell us that thereafter you want to receive required notices and disclosures<br>only in paper format. How you must inform us of your decision to receive future notices and<br>disclosure in paper format and withdraw your consent to receive notices and disclosures<br>electronically is described below.<br>Consequences of changing your mind<br>If you elect to receive required notices and disclosures only in paper format, it will slow the<br>speed at which we can complete certain steps in transactions with you and delivering services to<br>you because we will need first to send the required notices or disclosures to you in paper format,<br>and then wait until we receive back from you your acknowledgment of your receipt of such<br>paper notices or disclosures. Further, you will no longer be able to use the DocuSign system to<br>receive required notices and consents electronically from us or to sign electronically documents<br>from us.<br>All notices and disclosures will be sent to you electronically<br>Termos de Assinatura e Registro Eletrônico criado em: 24/04/2023 17:47:56<br>Partes concordam em: Ana Cabral
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Unless you tell us otherwise in accordance with the procedures described herein, we will provide<br>electronically to you through the DocuSign system all required notices, disclosures,<br>authorizations, acknowledgements, and other documents that are required to be provided or made<br>available to you during the course of our relationship with you. To reduce the chance of you<br>inadvertently not receiving any notice or disclosure, we prefer to provide all of the required<br>notices and disclosures to you by the same method and to the same address that you have given<br>us. Thus, you can receive all the disclosures and notices electronically or in paper format through<br>the paper mail delivery system. If you do not agree with this process, please let us know as<br>described below. Please also see the paragraph immediately above that describes the<br>consequences of your electing not to receive delivery of the notices and disclosures<br>electronically from us.<br>How to contact Roberto Coelho:<br>You may contact us to let us know of your changes as to how we may contact you electronically,<br>to request paper copies of certain information from us, and to withdraw your prior consent to<br>receive notices and disclosures electronically as follows:<br>To contact us by email send messages to: legal@sigmaca.com<br>To advise Roberto Coelho of your new email address<br>To let us know of a change in your email address where we should send notices and disclosures<br>electronically to you, you must send an email message to us at legal@sigmaca.com and in the<br>body of such request you must state: your previous email address, your new email address. We<br>do not require any other information from you to change your email address.<br>If you created a DocuSign account, you may update it with your new email address through your<br>account preferences.<br>To request paper copies from Roberto Coelho<br>To request delivery from us of paper copies of the notices and disclosures previously provided<br>by us to you electronically, you must send us an email to legal@sigmaca.com and in the body of<br>such request you must state your email address, full name, mailing address, and telephone<br>number. We will bill you for any fees at that time, if any.<br>To withdraw your consent with Roberto Coelho<br>To inform us that you no longer wish to receive future notices and disclosures in electronic<br>format you may:
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i. decline to sign a document from within your signing session, and on the subsequent page,<br>select the check-box indicating you wish to withdraw your consent, or you may;<br>ii. send us an email to legal@sigmaca.com and in the body of such request you must state your<br>email, full name, mailing address, and telephone number. We do not need any other information<br>from you to withdraw consent.. The consequences of your withdrawing consent for online<br>documents will be that transactions may take a longer time to process..<br>Required hardware and software<br>The minimum system requirements for using the DocuSign system may change over time. The<br>current system requirements are found here: https://support.docusign.com/guides/signer-guide-signing-system-requirements.<br>Acknowledging your access and consent to receive and sign documents electronically<br>To confirm to us that you can access this information electronically, which will be similar to<br>other electronic notices and disclosures that we will provide to you, please confirm that you have<br>read this ERSD, and (i) that you are able to print on paper or electronically save this ERSD for<br>your future reference and access; or (ii) that you are able to email this ERSD to an email address<br>where you will be able to print on paper or save it for your future reference and access. Further,<br>if you consent to receiving notices and disclosures exclusively in electronic format as described<br>herein, then select the check-box next to ‘I agree to use electronic records and signatures’ before<br>clicking ‘CONTINUE’ within the DocuSign system.<br>By selecting the check-box next to ‘I agree to use electronic records and signatures’, you confirm<br>that:<br> You can access and read this Electronic Record and Signature Disclosure; and<br> You can print on paper this Electronic Record and Signature Disclosure, or save or send<br>this Electronic Record and Disclosure to a location where you can print it, for future<br>reference and access; and<br> Until or unless you notify Roberto Coelho as described above, you consent to receive<br>exclusively through electronic means all notices, disclosures, authorizations,<br>acknowledgements, and other documents that are required to be provided or made<br>available to you by Roberto Coelho during the course of your relationship with Roberto<br>Coelho.
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ELECTRONIC RECORD AND SIGNATURE DISCLOSURE<br>From time to time, Sigma Lithium Corporation (we, us or Company) may be required by law to<br>provide to you certain written notices or disclosures. Described below are the terms and<br>conditions for providing to you such notices and disclosures electronically through the DocuSign<br>system. Please read the information below carefully and thoroughly, and if you can access this<br>information electronically to your satisfaction and agree to this Electronic Record and Signature<br>Disclosure (ERSD), please confirm your agreement by selecting the check-box next to ‘I agree to<br>use electronic records and signatures’ before clicking ‘CONTINUE’ within the DocuSign<br>system.<br>Getting paper copies<br>At any time, you may request from us a paper copy of any record provided or made available<br>electronically to you by us. You will have the ability to download and print documents we send<br>to you through the DocuSign system during and immediately after the signing session and, if you<br>elect to create a DocuSign account, you may access the documents for a limited period of time<br>(usually 30 days) after such documents are first sent to you. After such time, if you wish for us to<br>send you paper copies of any such documents from our office to you, you will be charged a<br>$0.00 per-page fee. You may request delivery of such paper copies from us by following the<br>procedure described below.<br>Withdrawing your consent<br>If you decide to receive notices and disclosures from us electronically, you may at any time<br>change your mind and tell us that thereafter you want to receive required notices and disclosures<br>only in paper format. How you must inform us of your decision to receive future notices and<br>disclosure in paper format and withdraw your consent to receive notices and disclosures<br>electronically is described below.<br>Consequences of changing your mind<br>If you elect to receive required notices and disclosures only in paper format, it will slow the<br>speed at which we can complete certain steps in transactions with you and delivering services to<br>you because we will need first to send the required notices or disclosures to you in paper format,<br>and then wait until we receive back from you your acknowledgment of your receipt of such<br>paper notices or disclosures. Further, you will no longer be able to use the DocuSign system to<br>receive required notices and consents electronically from us or to sign electronically documents<br>from us.<br>All notices and disclosures will be sent to you electronically<br>Termos de Assinatura e Registro Eletrônico criado em: 29/05/2024 16:28:20<br>Partes concordam em: Caio Araujo
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Unless you tell us otherwise in accordance with the procedures described herein, we will provide<br>electronically to you through the DocuSign system all required notices, disclosures,<br>authorizations, acknowledgements, and other documents that are required to be provided or made<br>available to you during the course of our relationship with you. To reduce the chance of you<br>inadvertently not receiving any notice or disclosure, we prefer to provide all of the required<br>notices and disclosures to you by the same method and to the same address that you have given<br>us. Thus, you can receive all the disclosures and notices electronically or in paper format through<br>the paper mail delivery system. If you do not agree with this process, please let us know as<br>described below. Please also see the paragraph immediately above that describes the<br>consequences of your electing not to receive delivery of the notices and disclosures<br>electronically from us.<br>How to contact Sigma Lithium Corporation:<br>You may contact us to let us know of your changes as to how we may contact you electronically,<br>to request paper copies of certain information from us, and to withdraw your prior consent to<br>receive notices and disclosures electronically as follows:<br>To advise Sigma Lithium Corporation of your new email address<br>To let us know of a change in your email address where we should send notices and disclosures<br>electronically to you, you must send an email message to us at and in the body of such request<br>you must state: your previous email address, your new email address.<br>If you created a DocuSign account, you may update it with your new email address through your<br>account preferences.<br>To request paper copies from Sigma Lithium Corporation<br>To request delivery from us of paper copies of the notices and disclosures previously provided<br>by us to you electronically, you must send us an email to and in the body of such request you<br>must state your email address, full name, mailing address, and telephone number.<br>To withdraw your consent with Sigma Lithium Corporation<br>To inform us that you no longer wish to receive future notices and disclosures in electronic<br>format you may:<br>i. decline to sign a document from within your signing session, and on the subsequent page,<br>select the check-box indicating you wish to withdraw your consent, or you may;
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ii. send us an email to and in the body of such request you must state your email, full name,<br>mailing address, and telephone number. . .<br>Required hardware and software<br>The minimum system requirements for using the DocuSign system may change over time. The<br>current system requirements are found here: https://support.docusign.com/guides/signer-guide-signing-system-requirements.<br>Acknowledging your access and consent to receive and sign documents electronically<br>To confirm to us that you can access this information electronically, which will be similar to<br>other electronic notices and disclosures that we will provide to you, please confirm that you have<br>read this ERSD, and (i) that you are able to print on paper or electronically save this ERSD for<br>your future reference and access; or (ii) that you are able to email this ERSD to an email address<br>where you will be able to print on paper or save it for your future reference and access. Further,<br>if you consent to receiving notices and disclosures exclusively in electronic format as described<br>herein, then select the check-box next to ‘I agree to use electronic records and signatures’ before<br>clicking ‘CONTINUE’ within the DocuSign system.<br>By selecting the check-box next to ‘I agree to use electronic records and signatures’, you confirm<br>that:<br> You can access and read this Electronic Record and Signature Disclosure; and<br> You can print on paper this Electronic Record and Signature Disclosure, or save or send<br>this Electronic Record and Disclosure to a location where you can print it, for future<br>reference and access; and<br> Until or unless you notify Sigma Lithium Corporation as described above, you consent to<br>receive exclusively through electronic means all notices, disclosures, authorizations,<br>acknowledgements, and other documents that are required to be provided or made<br>available to you by Sigma Lithium Corporation during the course of your relationship<br>with Sigma Lithium Corporation.
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Exhibit 99.2

Exhibit 99.3

São Paulo, July 11th, 2024	Grant Thornton Auditores Independentes Ltda.<br><br> <br>Av. Eng. Luiz Carlos Berrini, 105 -<br><br> 12^o^ andar Itaim Bibi, São Paulo (SP)<br><br> Brasil<br><br> <br>T +55 11 3886-5100<br><br> <br>www.grantthornton.com.br

To:

Ontario Securities Commission

British Columbia Securities Commission Alberta Securities Commission

Financial and Consumer Affairs Authority of Saskatchewan The Manitoba Securities Commission

Financial and Consumer Services Commission, New Brunswick Nova Scotia Securities Commission

Financial and Consumer Services Division, Prince Edward Island

Office of the Superintendent of Securities, Service 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

Dear Sir/Madam

Re: Notice of Change of Auditors of Sigma Lithium Corporation

We have read the Notice of Sigma Lithium Corporation dated July 10, 2024 (the “Notice") and are in agreement with the statements contained in such Notice.

Yours very truly,

“Grant Thornton Auditores Independentes Ltda.”

Grant Thornton Auditores Independentes Ltda.

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