Relevant Facts and Notices

From

Company

Type

Title

BRASKEM,S.A. Relevant Fact: Otros sobre negocio y situaciones financieras 17:06 01/06/2026

102 KB Braskem’s Reference Form

BRASKEM,S.A. Relevant Fact: Convocatorias y acuerdos de Junta y asambleas 16:58 01/06/2026

356 KB Notice of Postponement and Convocation

BRASKEM,S.A. Relevant Fact: Otros sobre información societaria 16:50 01/06/2026

277 KB Summary Statement EGM

BRASKEM,S.A. Relevant Fact: Convocatorias y acuerdos de Junta y asambleas 16:41 01/06/2026

258 KB Notice to Shareholders regarding the postponement of Braskem’s Extraordinary General Meeting

BRASKEM,S.A. Relevant Fact: Convocatorias y acuerdos de Junta y asambleas 16:37 01/06/2026

359 KB Notice of Postponement and Convocation for Braskem’s Extraordinary General Meeting

BRASKEM,S.A. Relevant Fact: Composición de otros órganos de gestión y control 20:24 22/05/2026

123 KB Change in the composition of the statutory compliance and audit committee

BRASKEM,S.A. Relevant Fact: Otros sobre negocio y situaciones financieras 20:22 22/05/2026

404 KB REQUEST FOR CLARIFICATION REGARDING NEWS PUBLISHED IN THE MEDIA

BRASKEM,S.A. Relevant Fact: Presentaciones de resultados a prensa, analistas e inversores y sus convocatorias 18:05 15/05/2026

1 MB Earnings 1Q 2026 Presentation

BRASKEM,S.A. Relevant Fact: Información financiera periódica 18:04 15/05/2026

2 MB Earnings Release 1Q26

BRASKEM,S.A. Relevant Fact: Presentaciones de resultados a prensa, analistas e inversores y sus convocatorias 17:48 15/05/2026

282 KB Annual calendar of corporate events

BRASKEM,S.A. Relevant Fact: Programas de recompra de acciones y autocartera 17:46 15/05/2026

219 KB Management and Related Persons’ Trading of Securities Issued by the Company Article 11 – CVM Instruction #358/2002

BRASKEM,S.A. Relevant Fact: Programas de recompra de acciones y autocartera 17:42 15/05/2026

210 KB Shares held in treasury

BRASKEM,S.A. Relevant Fact: Convocatorias y acuerdos de Junta y asambleas 17:39 15/05/2026

244 KB MINUTES OF THE BOARD OF DIRECTORS’ MEETING HELD ON MAY 06, 2026

BRASKEM,S.A. Relevant Fact: Información financiera periódica 17:29 15/05/2026

582 KB PRODUCTION & SALES REPORT FIRST QUARTER 2026

BRASKEM,S.A. Relevant Fact: Convocatorias y acuerdos de Junta y asambleas 16:59 07/05/2026

591 KB Notice to Shareholders regarding 2026 Annual General Meeting

BRASKEM,S.A. Relevant Fact: Convocatorias y acuerdos de Junta y asambleas 10:06 29/04/2026

287 KB Summary Statement considering the votes received by the Company, the Stock Transfer Agent and the Central Depositary for the OGM 2026

BRASKEM,S.A. Relevant Fact: Convocatorias y acuerdos de Junta y asambleas 10:03 29/04/2026

525 KB Minutes of the Extraordinary General Meeting held on April 27, 2026

BRASKEM,S.A. Relevant Fact: Pactos parasociales o que supongan cambio de control 09:58 29/04/2026

110 KB Material Fact regarding Braskem informs about the correspondence received from Petrobras regarding the execution of a New Shareholders’ Agreement

BRASKEM,S.A. Relevant Fact: Información financiera periódica 10:47 21/04/2026

145 KB 2025 Form 20-F

BRASKEM,S.A. Relevant Fact: Otros sobre operaciones financieras 10:34 21/04/2026

147 KB Material Fact regarding letters sent by Novonor and Shine I Fundo de Investimento.

BRASKEM,S.A. Relevant Fact: Programas de recompra de acciones y autocartera 10:33 21/04/2026

219 KB Management and Related Persons’ Trading of Securities Issued by the Company Article 11 – CVM Instruction #358/2002

BRASKEM,S.A. Relevant Fact: Programas de recompra de acciones y autocartera 10:32 21/04/2026

210 KB Shares held in treasury

BRASKEM,S.A. Relevant Fact: Otros sobre negocio y situaciones financieras 10:31 21/04/2026

272 KB Answer to CVM/B3 letter - O Estado de São Paulo 04/07/2026