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 March, 2026

(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) 29.300.006.939
a Publicly Held Company

MINUTES OF THE BOARD OF DIRECTORS’ MEETING

HELD ON MARCH 25, 2026

1.              DATE, TIME, AND PLACE: on March 25, 2026, at 1:00 p.m., at the offices of Braskem S.A. (“Braskem” or the “Company”), located at Rua Lemos Monteiro, No. 120, 22nd floor, in the City of São Paulo, State of São Paulo, ZIP Code 05501-050, Brazil.

2.              CALL NOTICE, ATTENDANCE AND BOARD: An Ordinary Meeting of the Company, duly called in accordance with the Company’s Bylaws, was held with the participation of all members of the Board of Directors, as listed below, with Board members José Mauro M. Carneiro da Cunha, Luiz Eduardo Valente Moreira and Paulo Roberto Britto Guimarães attending via Microsoft Teams. Also in attendance were Mr. Rodrigo Montecchiari, a member of the Finance and Investments Committee, the Chief Executive Officer, Roberto Ramos, Vice Presidents Felipe Jens and Geraldo Vilaça, as well as Ms. Lilian Bruno, Ms. Clarisse Schlieckmann, Ms. Naiara Assad and Ms. Larissa Varella. The Chairman of the Board of Directors (the “Chairman”) presided over the meeting, and Ms. Lilian Bruno acted as Secretary thereof.

3.              AGENDA, RESOLUTIONS AND MATTERS SUBMITTED FOR INFORMATION OR OF INTEREST TO THE COMPANY:

4.              RESOLUTIONS: After review of the matters submitted for resolution, the related supporting materials having been previously made available to the members of the Board of Directors and to remain on file in the Company’s Corporate Governance portal, the following resolutions were duly adopted:

4.1.         Matters Submitted for Information: Nothing to report.

4.2.         Matters of Interest to the Company: Nothing to report

5.              CLOSING: There being no further matters to discuss, the meeting was adjourned, and these minutes were drawn up and, after having been read, discussed and found to be in order, were signed by all Directors present, as well as by the Chairman and the Secretary.

São Paulo, March 25, 2026.

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: March 27, 2026

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.