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 November, 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- _____.

São Paulo, November 11, 2026.
To
B3 – BRASIL, BOLSA, BALCÃO
(“B3”)
Praça Antônio Prado, 48, 2º andar
ZIP Code 01010-010, São Paulo, State of São Paulo
Ana
Lucia da costa Pereira
Listing
And Issuer Oversight Department
B3
S.A. - Brasil, Bolsa, Balcão
c.c.:
CVM - Securities Exchange Commission
Mr.
Fernando Soares Vieira - Superintendent of Corporate Relations
Mr.
André Francisco de Alencar Passaro - Superintendent of Market and Intermediary Relations
Ref.:
Letter No. 344/2026-SLE dated November 10, 2026 - BRASKEM - Request for Clarification
Dear Sir/Madam,
We
refer to B3 Letter No. 344/2026-SLE (the “Letter”),
dated November 10, 2026, pursuant to which you requested clarifications from Braskem S.A. (“Braskem” or the “Company”),
as detailed below:
“Ref.: Request for clarification
Dear Sir,
Pursuant to the indenture of the 18th
issuance of debentures, amortization and remuneratory interest payments were scheduled for November 9, 2026, which were not settled, rendering
the asset in default.
Accordingly, we request that you inform,
by November 11, 2026, which measures will be taken by the Company in light of such default and any new payment date, as well as any other
information deemed relevant.”
In this regard, the Company
clarifies that, as disclosed in the Material Fact dated August 24, 2026, the Company and certain of its subsidiaries (collectively, the
“Debtors”) filed a petition for extrajudicial reorganization (the “Petition”), which encompasses unsecured financial
obligations, including the Company’s 18th Issuance Debentures, issued on November 9, 2022, in the total amount of R$1.2 billion
and divided into two series (BRKMA8 and BRKMB8, collectively, the “Debentures”).
On August 27, 2026, the 2nd
Bankruptcy and Judicial Reorganization Court of the Judicial District of São Paulo (the “RE Court”) granted the processing
of the Petition, ratifying the stay, for a period of 120 days, already taking into account the deduction of the 60 days granted under
the previous decision that had granted the precautionary relief, of all enforcement proceedings in progress against the petitioners by
creditors subject to the extrajudicial reorganization: (i) of the statute of limitations applicable to the Debtors’ obligations;
(ii) of lawsuits and enforcement proceedings filed against the Debtors, or any other proceeding related to the claims covered, including
bankruptcy petitions; and (iii) of orders for withholding, attachment, garnishment, seizure, search and seizure, and judicial or extrajudicial
restraint of assets, pursuant to Paragraph 8 of Article 163, combined with Article 6, both of Law No. 11,101/05.
In this context, the Company’s
non-payment of the remuneration on the Debentures is supported by the suspension of the enforceability of the claims subject to the Petition,
as determined by the RE Court in the aforementioned decision, as well as by Law No. 11,101/05.
The Company reaffirms its commitment
to pursuing a consensual, structural and orderly solution for its capital structure, while ensuring the continuity of its operations in
the ordinary course of business.
There being no further matters
to address at this time, we remain at your disposal for any further clarification that may be required.
Additional information can be obtained from the Investor
Relations Department by phone at +55 (11) 3576-9531 or by email at braskem-ri@braskem.com.br.
Sincerely,
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: November 11, 2026
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BRASKEM S.A. |
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/s/ Carlos Augusto Machado Pereira de Almeida Brandão |
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Carlos Augusto Machado Pereira de Almeida Brandão |
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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.