Notice to the Market - Braskem's 2025 Form 20-F Was Filed

São Paulo, Brazil--(Newsfile Corp. - April 20, 2026) - Braskem S.A. (BV: BRKM3) (BV: BRKM5) (BV: BRKM6) (NYSE: BAK) (LATIBEX: XBRK) ("Braskem" or "Company") announces to its shareholders and the market in general that filed today its Annual Report on Form 20-F for the year ended December 31, 2025 (the "2025 Form 20-F") with the U.S. Securities and Exchange Commission.

The document is already available on Braskem's Investor Relations website: www.braskem-ri.com.br. Shareholders of the Company may receive a hard copy of Braskem's audited financial statements included in the 2025 Form 20-F, free of charge, upon request.

For more information, please contact Braskem's Investor Relations Department by phone at [phone] or by email at [e-mail].

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/293515

The Braskem Pfd (A) (A) Stock at the time of publication of the news with a raise of +1,68 % to 3,63EUR on NYSE stock exchange (21. April 2026, 01:00 Uhr).