Form 3 Filing for Magda Maria de Regina Chambriard

This filing reports that Magda Maria de Regina Chambriard, a director at BRASKEM SA (BAK), acquired no securities on April 29, 2026. The report was filed on May 12, 2026. Chambriard is a director at the company and holds no other significant ownership roles as per this filing. The address provided is in Rio de Janeiro, Brazil.