SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13A-16
OR 15D-16 OF THE SECURITIES EXCHANGE ACT OF 1934

For the month of September, 2024

(Commission File No. 1-14862 )

BRASKEM S.A.

(Exact Name as Specified in its Charter)

N/A

(Translation of registrant's name into English)

Rua Eteno, 1561, Polo Petroquimico de Camacari
Camacari, Bahia - CEP 42810-000 Brazil

(Address of principal executive offices)

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

Form 20-F ___X___       Form 40-F ______

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). _____

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). _____

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes ______       No ___X___

If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82- _____.

BRASKEM S.A.

National Register of Legal Entities (CNPJ) No. 42.150.391/0001-70

State Registration (NIRE) 29300006939

A Publicly Held Company

CANCELLATION NOTICE

EXTRAORDINARY GENERAL MEETING

OF OCTOBER 03, 2024

The shareholders of BRASKEM S.A. (“Shareholders” and “Company”, respectively) are hereby informed of the cancellation of the Extraordinary General Meeting, which would be held on October 3, 2024, at 11 am, through Webex digital platform (“Digital Platform” and “Meeting”, respectively), whose Agenda was the replacement of 1 (one) effective member of the Company's Board of Directors appointed by shareholder Petróleo Brasileiro S.A. – Petrobras, to conclude the remaining term of office, until the Annual General Meeting that will resolve on the Company’s financial statements for the fiscal year to end on December 31, 2025, as well as the ratification of the composition and of the independent members of the Board of Directors.

The cancellation of the Meeting follows a request from Petróleo Brasileiro S.A. – Petrobras due to its internal process to appoint or replace members of the Company's Board of Directors, in accordance with the Shareholders' Agreement executed with Novonor S.A. – Em Recuperação Judicial, NSP Investimentos S.A. – Em Recuperação Judicial.

Due to the cancellation of the Meeting, the Call Notice published in “O Correio da Bahia” in the editions of September 12, 13 and 14, 2024, pages 9, 20 and 38, respectively, as well as on the website of the same newspaper (https://publicidadelegal.correio24horas.com.br/), CVM website (http://www.cvm.gov.br/), Company’s website (http://www.braskem.com.br/) and website of B3 S.A. – Brasil, Bolsa, Balcão (http://www.b3.com.br/pt_br/) has no effect.

Camaçari/BA, September 26, 2024.

José Mauro Mettrau Carneiro da Cunha

Chairman of the Board of Directors

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.

Date: September 26, 2024

DISCLAIMER ON FORWARD-LOOKING STATEMENTS

This report on Form 6-K may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are statements that are not historical facts, and are based on our management’s current view and estimates of future economic and other circumstances, industry conditions, company performance and financial results, including any potential or projected impact of the geological event in Alagoas and related legal proceedings and of COVID-19 on our business, financial condition and operating results. The words “anticipates,” “believes,” “estimates,” “expects,” “plans” and similar expressions, as they relate to the company, are intended to identify forward-looking statements. Statements regarding the potential outcome of legal and administrative proceedings, the implementation of principal operating and financing strategies and capital expenditure plans, the direction of future operations and the factors or trends affecting our financial condition, liquidity or results of operations are examples of forward-looking statements. Such statements reflect the current views of our management and are subject to a number of risks and uncertainties, many of which are outside of the our control. There is no guarantee that the expected events, trends or results will actually occur. The statements are based on many assumptions and factors, including general economic and market conditions, industry conditions, and operating factors. Any changes in such assumptions or factors, including the projected impact of the geological event in Alagoas and related legal proceedings and the unprecedented impact of COVID-19 pandemic on our business, employees, service providers, stockholders, investors and other stakeholders, could cause actual results to differ materially from current expectations. Please refer to our annual report on Form 20-F for the year ended December 31, 2019 filed with the SEC, as well as any subsequent filings made by us pursuant to the Exchange Act, each of which is available on the SEC’s website (www.sec.gov), for a full discussion of the risks and other factors that may impact any forward-looking statements in this presentation.