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.
Corporate Taxpayer ID (CNPJ):
42.150.391/0001-70
Company Registry: 29,300,006,939
Publicly Held Company
MATERIAL FACT
Braskem S.A. ("Braskem"
or "Company") (Ticker B3: BRKM3, BRKM5 and BRKM6; NYSE: BAK; LATIBEX: XBRK) hereby informs its shareholders and the market in
general that, on this date, Supplementary Law No. 228 was published in the Official Gazette of the Federative Republic of Brazil, providing
for the increase, from 0.73% to 5.8%, of the benefit of the Special Regime for the Chemical Industry ("REIQ"), which corresponds
to PIS/Cofins credits, based on feedstock of the chemical and petrochemical industries, subject to offsetting with federal taxes.
The benefit will have a
budget limit of R$ 2 billion for the sector and will be effective from March to December 31, 2026, and, as of April, it will be subject
to a 10% reduction, as provided for in the applicable legislation.
For the year 2026, a sectoral
limit of R$ 1.1 billion was also established for the use of incremental credit ("REIQ Investment") of 1.5%, linked to investments.
The Company reinforces
its commitment to the country through initiatives that seek to strengthen the competitiveness of the Brazilian chemical and petrochemical
industry, with a focus on mitigating the relevant impacts resulting from the prolonged downturn cycle of the entire industry.
Additional information
can be obtained from the Investor Relations Department by calling +55 11 3576 9531 or by e-mail braskem-ri@braskem.com.br.
São Paulo, March 20,
2026.
Felipe Montoro Jens
Chief Financial and Investor
Relations Officer
Braskem S.A.
1
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 20, 2026
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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 |
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.