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Investor Presentaiton

Geological Event in Alagoas - Update Relocation & Compensation - PCF1 (Status as of 09/30/2023) Update on Relocation and Compensation Proposals in relation to the total amount expected Closing & Monitoring of Wells Concluded In progress Not started (Status as of 09/30/2023) 14 have the original well tamponade activities completed 15 Submitted + than 99% Accepted ~97% Paid ~93% 19.073 proposals 18.491 proposals 17.744 proposals 9 Acceptance rate of 99.3% Relocation Program with 99,2% of execution until Sep/23 1 in approval by ANM 4 5 6 1 2 1 Sand Backfilling Group Natural Filling Group Tamponade Group² Sonar Monitoring Group The Company cannot eliminate future developments related to the matter or its associated expenses, and the costs to be incurred by Braskem could differ from its estimates or accrued amounts Source: Braskem | Note (1): PCF: Financial Compensation and Support for Relocation Program. Note (2): Tamponade technique consists of implementing physical barriers, such as cement paste, to prevent fluids from penetrating between permeable geological formations through the well and/or migration of fluids to the surface. PUBLIC Braskem 66
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