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, 2025
(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- _____.

NOTICE TO THE MARKET
São Paulo, September
8, 2025 - Braskem S.A. (“Braskem” or the “Company”) (Ticker B3: BRKM3, BRKM5, and BRKM6; NYSE: BAK; LATIBEX:
XBRK), in connection with the Notice to the Market disclosed on August 28, 2025, hereby informs its shareholders and the market in general
that Braskem Idesa S.A.P.I. (“Braskem Idesa”), with the objective of reviewing its existing capital structure and liquidity
conditions, has retained Lazard Inc., Cleary Gottlieb Steen & Hamilton LLP and Sainz Abogados to support Braskem Idesa in evaluating
a wide range of economic-financial options.
This decision reflects
Braskem Idesa's ongoing efforts to preserve its liquidity and improve its results in general amid the current scenario of macroeconomic
uncertainties, price volatility of its commodities, higher input costs and weaker-than-expected demand.
Braskem informs that it
will keep the market informed about relevant developments on the subject, in compliance with the applicable legislation.
For more information,
please contact Braskem's Investor Relations Department by phone at +55 (11) 3576-9531 or by e-mail braskem-ri@braskem.com.br.
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 8, 2025
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BRASKEM S.A. |
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By: |
/s/ Felipe Montoro Jens |
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Name: |
Felipe Montoro Jens |
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Title: |
Chief Financial Officer |
DISCLAIMER ON FORWARD-LOOKING STATEMENTS
This Notice to the Market 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 Notice to the Market 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.