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 October 2023

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	Press release dated October 02, 2023

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: October 02, 2023
	Ana<br> Cristina Cabral Gardner
	Chief<br> Executive Officer

Exhibit 99.1

SIGMA LITHIUMACHIEVES RECORD PEAK PRODUCTION

OF 890 TONNES PER DAY, EQUIVALENT TO ANNUALIZED

320,000 TONNESPER YEAR

HIGHLIGHTS

Achieves Operational Targets

·	Sigma<br> Lithium announces that its Greentech Plant has reached record daily peak production of 890<br> tonnes of Triple Zero Green Lithium, equivalent to annualized production of 320,000 tonnes
·	The<br> Company is on track to achieve annual 2023 production guidance of 130,000 tonnes
---	---
·	The<br> Company has exceeded the design utilization rate of 85%, running at 88%
---	---
·	Greentech<br> Plant’s throughput has evolved to 100% design capacity
---	---

SAO PAULO, BRAZIL – (Oct. 2, 2023) – Sigma Lithium Corporation (“Sigma Lithium” or the “Company”) (NASDAQ: SGML, BVMF:S2GM34, TSXV: SGML), a leading global lithium producer dedicated to powering the next generation of electric vehicles with carbon neutral, responsibly sourced chemical grade lithium concentrate, announces that its Greentech Plant has reached record daily peak production of 890 tonnes, equivalent to annualized production of 320,000 tonnes of Triple Zero Green Lithium at battery grade with 5.5% of lithium oxide.

Therefore, as planned, the Company demonstrates it remains on track to achieve annual 2023 production guidance of 130,000 tonnes of Triple Zero Green Lithium.

Sigma Lithium has successfully ramped up its Greentech Plant to enable it to operate at 100% of design nameplate throughput capacity of annualized production of 270,000 tonnes of Triple Zero Green Lithium.

Achieved Operational Targets

Achieving these targets demonstrates the excellent performance of the Greentech Plant and its tailings dry-stacked circuit in synchronicity with Dense Medium Separation (DMS).

·	The<br> Company has exceeded the design utilization rate of 85%, running at 88%.
·	Throughput<br> has evolved, as planned, from 75% throughput capacity at the end of July 2023 to 100%<br> design capacity, as of Sept. 30, 2023.
---	---
o	DMS cyclones operating consistently at<br> 200 tonnes/hour (maximum capacity is 230 tonnes/hour)
---	---
·	Greentech<br> Plant global recoveries have been tracking in line with design.
---	---
o	The Company has been calibrating “down”<br> the concentrate grade from 5.9% Li2O lithium concentrate.
---	---

Sigma Lithium’s state-of-the-art Greentech Plant is the first lithium plant in the world to produce chemical grade lithium concentrate without a tailings dam and with 100% reuse of the water utilized in the processing.

·	With<br> 100% dry-stacked tailings and the absence of hazardous chemical products in processing the<br> lithium, the Company is minimizing the risk of water and soil contamination.

| | 1 |

| --- |

·	Actively<br> contributing to the preservation of water and biodiversity (ecosystems of creeks, and “caatinga”<br> vegetation in the region).

Sigma Lithium has been demonstrating high adherence to the reserve reconciliation:

·	Actual<br> ore grade and volumes mined are in line with long term geological and mining models reserves<br> stated at the Company’s NI 43101 Technical Report.

Achievement of these milestones is due to the dedication and commitment of the on-site Sigma Lithium team, led by Director of Mining Reinaldo Brandao and Director of Processing Keith Prentice. Over the past three months of their on-site supervision, Reinaldo and Keith have led the operational ramp-up of the Greentech Plant, including the re-engineering of the tailings dry-stacking/water reusage circuit.

ABOUT SIGMA LITHIUM

Sigma Lithium (NASDAQ: SGML, BVMF: S2GM34, TSXV: SGML) is a leading global lithium producer dedicated to powering the next generation of electric vehicle batteries with carbon neutral, socially and environmentally sustainable chemical-grade lithium concentrate.

Sigma Lithium has been at the forefront of environmental and social sustainability in the EV battery materials supply chain for six years and it is currently producing Triple Zero Green Lithium from its Grota do Cirilo Project in Brazil. Phase 1 of the project is expected to produce 270,000 tonnes of Triple Zero Green Lithium annually (36,700 LCE annually). If it is determined to proceed after completion of an ongoing feasibility study, Phase 2 & 3 of the project are expected to increase production to 766,000 tonnes annually (or 104,200 LCE annually). The project produces Triple Zero Green Lithium in its state-of-the-art Greentech lithium plant that uses 100% renewable energy, 100% recycled water and 100% dry-stacked tailings.

Please refer to the Company’s National Instrument 43-101 technical report titled "Grota do Cirilo Lithium Project Araçuaí and Itinga Regions, Minas Gerais, Brazil, Amended and Restated Technical Report" issued June 12, 2023, which was prepared for Sigma Lithium by Homero Delboni Jr., MAusIMM, Promon Engenharia; Marc-Antoine Laporte, P.Geo, SGS Canada Inc; Jarrett Quinn, P.Eng., Primero Group Americas; Porfirio Cabaleiro Rodriguez, (MEng), FAIG, GE21 Consultoria Mineral; and Noel O'Brien, B.E., MBA, F AusIMM (the “Updated Technical Report”). The Updated Technical Report is filed on SEDAR and is also available on the Company’s website.

For more information about Sigma Lithium, visit https://www.sigmalithiumresources.com/

FOR ADDITIONAL INFORMATIONPLEASE CONTACT

Jamie Flegg, Chief Development Officer

+1 (647) 706-1087

jamie.flegg@sigmalithium.com.br

Daniel Abdo, Chief Communications Officer

+55 11 2985-0089

daniel.abdo@sigmalithium.com.br

Sigma Lithium

Sigma<br> Lithium
@sigmalithium
@SigmaLithium

| | 2 |

| --- |

FORWARD-LOOKING STATEMENTS

This news release includes certain "forward-lookinginformation" under applicable Canadian and U.S. securities legislation, including but not limited to statements relating to timingand costs related to the general business and operational outlook of the Company, the environmental footprint of tailings and positiveecosystem impact relating thereto, donation and upcycling of tailings, timing and quantities relating to tailings and Green Lithium,achievements and projections relating to the Zero Tailings strategy, achievement of ramp-up volumes, production estimates and the operationalstatus of the Groto do Cirilo Project, and other forward-looking information. All statements that address future plans, activities, events,estimates, expectations or developments that the Company believes, expects or anticipates will or may occur is forward-looking information,including statements regarding the potential development of mineral resources and mineral reserves which may or may not occur. Forward-lookinginformation contained herein is based on certain assumptions regarding, among other things: general economic and political conditions;the stable and supportive legislative, regulatory and community environment in Brazil; demand for lithium, including that such demandis supported by growth in the electric vehicle market; the Company’s market position and future financial and operating performance;the Company’s estimates of mineral resources and mineral reserves, including whether mineral resources will ever be developed intomineral reserves; and the Company’s ability to operate its mineral projects including that the Company will not experience anymaterials or equipment shortages, any labour or service provider outages or delays or any technical issues. Although management believesthat the assumptions and expectations reflected in the forward-looking information are reasonable, there can be no assurance that theseassumptions and expectations will prove to be correct. Forward-looking information inherently involves and is subject to risks and uncertainties,including but not limited to that the market prices for lithium may not remain at current levels; and the market for electric vehiclesand other large format batteries currently has limited market share and no assurances can be given for the rate at which this marketwill develop, if at all, which could affect the success of the Company and its ability to develop lithium operations. There can be noassurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipatedin such statements. Accordingly, readers should not place undue reliance on forward-looking information. The Company disclaims any intentionor obligation to update or revise any forward-looking information, whether because of new information, future events or otherwise, exceptas required by law. For more information on the risks, uncertainties and assumptions that could cause our actual results to differ fromcurrent expectations, please refer to the current annual information form of the Company and other public filings available under theCompany’s profile at www.sedar.com.

Neither the TSX Venture Exchange nor itsRegulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacyor accuracy of this news release.

| | 3 |

| --- |