Ownership Filing for Carlos Augusto Machado Pereira de Almeida Brandao

This filing reports on the ownership of securities by Carlos Augusto Machado Pereira de Almeida Brandao, identified by reporting owner ID CIK 0002141172. Mr. Brandao, who holds the position of CFO & IR Officer at BRASKEM SA (trading symbol BAK), reported ownership as of June 8, 2026. The filing indicates that Mr. Brandao owns 1 security. The reporting date for this document was June 18, 2026. The owner's address is located in Sao Paulo, Brazil.