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 August, 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.
Corporate Taxpayer ID (C.N.P.J.)
No. 42.150.391/0001-70
State Registration (NIRE)
29300006939
Publicly-held company
MATERIAL FACT
Braskem S.A. (“Braskem”
or the “Company”) (B3 Tickers: BRKM3, BRKM5, and BRKM6; NYSE: BAK; LATIBEX: XBRK), following up on the Material Fact disclosed
today regarding the filing of a request for out-of-court reorganization by the Company and certain of its subsidiaries (“Extrajudicial
Reorganization”), hereby notifies its shareholders and the market in general that it has provided certain holders and investment
managers of one or more of the Senior Notes and Debentures issued or guaranteed by Braskem (“Investors”) with certain
non-public information related to Braskem and its subsidiaries (“Shared Information”), in the context of negotiations
regarding the Extrajudicial Reorganization plan.
Pursuant
to the confidentiality agreements entered into in August 2026 between Braskem and the Investors (collectively, the “Confidentiality
Agreements”), Braskem has agreed to publicly disclose the Shared Information after the expiration of the term set forth in the
Confidentiality Agreements. The Shared Information is publicly available on Braskem’s websites at https://api.mziq.com/mzfilemanager/v2/d/540b55c5-af99-45f7-a772-92665eb948e9/88d16722-0660-7c95-2cee-4c83373df098?origin=2 and
is provided to fulfill Braskem’s obligations under the Confidentiality Agreements and in accordance with applicable legal regulations.
The Company will
keep the market informed of any material developments regarding this matter, in compliance with applicable laws.
Additional
information may be obtained from the Investor Relations Department by calling (11) 3576-9531 or by emailing braskem-ri@braskem.com.br.
São Paulo, August
24, 2026
Carlos Augusto Machado Pereira
de Almeida Brandão
Chief Financial and Investor
Relations Officer
Braskem S.A.

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: August 24, 2026
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BRASKEM S.A. |
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By: |
/s/ Carlos Augusto Machado Pereira de Almeida Brandão |
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Name: |
Carlos Augusto Machado Pereira de Almeida Brandão |
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Title: |
Chief Financial Officer |
DISCLAIMER ON FORWARD-LOOKING STATEMENTS
This Material Fact may contain forward-looking statements. These statements are not historical facts, but rather are based on the current
view and estimates of the Company's management regarding future economic and other circumstances, industry conditions, financial performance
and results, including any potential or projected impact regarding the geological event in Alagoas and related legal procedures on the
Company's business, financial condition and operating results. The words "project," "believe," "estimate," "expect," "plan", "objective"
and other similar expressions, when referring to the Company, are used to identify forward-looking statements. Statements related to the
possible outcome of legal and administrative proceedings, implementation of operational and financing strategies and investment plans,
guidance on future operations, the objective of expanding its efforts to achieve the sustainable macro objectives disclosed by the Company,
as well as factors or trends that affect the financial condition, liquidity or operating results of the Company are examples of forward-looking
statements. Such statements reflect the current views of the Company's management and are subject to various risks and uncertainties,
many of which are beyond the Company's control. There is no guarantee that the events, trends or expected results will actually occur.
The statements are based on various assumptions and factors, including, but not limited to, general economic and market conditions, industry
conditions and operating factors, availability, development and financial access to new technologies. Any change in these assumptions
or factors, including the projected impact from the joint venture and its development of technologies, from the geological event in Alagoas
and related legal procedures and the unprecedented impact on businesses, employees, service providers, shareholders, investors and other
stakeholders of the Company could cause effective results to differ significantly from current expectations. For a comprehensive description
of the risks and other factors that could impact any forward-looking statements in this document, especially the factors discussed in
the sections, see the reports filed with the Brazilian Securities and Exchange Commission (CVM). This Material Fact does not constitute
any offer of securities for sale in Brazil. No securities may be offered or sold in Brazil without being registered or exempted from registration,
and any public offer of securities carried out in Brazil must be made through a prospectus, which would be made available by Braskem and
contain detailed information on Braskem and its management, as well as its financial statements.