SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K/A
REPORT OF FOREIGN PRIVATE ISSUER PURSUANT
TO RULE 13A-16
OR 15D-16 OF THE SECURITIES EXCHANGE ACT OF 1934
For the month of October, 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- _____.
ANNUAL CALENDAR OF CORPORATE EVENTS
6th version (10/30/2026)
| Company Name | Braskem S.A. |
| Responsible for the Investor Relations Area | Name: Rosana Cristina Avolio |
| E-mail: braskem-ri@braskem.com.br | |
| Phone: +55 11 3576-9531 | |
| Reference date | 2026 |
Scheduled dates for periodic and sporadic disclosure of information
| Annual Financial Statement and Standardized Financial Statement (DFP), as of 12/31/2025 | 03/26/2026 |
| Reference Form for the current fiscal year | 05/27/2026 |
| Report on the Brazilian Corporate Governance Code – Listed Companies | 07/31/2026 |
| Quarterly Financial Statements – ITR | |
| Referring to 1st quarter | 05/13/2026 |
| Referring to 2nd quarter | 08/13/2026 |
| Referring to 3rd quarter | 11/12/2026 |
| Annual Shareholders’ Meeting | |
| Submission of the Management Proposal | 03/27/2026 |
| Submission of the Call Notice | 03/27/2026 |
| Annual Shareholders’ Meeting | 04/29/2026 |
| Submission of the Minutes of the Annual Shareholders’ Meeting | 04/29/2026 |
| Public Meetings with Analysts | |
| Online Public Meeting | 11/13/2026 |
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: October 30, 2026
| BRASKEM S.A. | |||
| By: | /s/ Carlos Augusto Machado Pereira de Almeida Brandão | ||
| Name: | Carlos Augusto Machado Pereira de Almeida Brandão | ||
| Title: | Chief Financial Officer | ||
DISCLAIMER ON FORWARD-LOOKING STATEMENTS
This Report on Form 6-K 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 Report on Form 6-K 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.