ENERGY CO OF PARANA (ELP) Form 6-K — May 21, 2026

Companhia Paranaense de Energia (Copel) announced that its Board of Directors unanimously approved the amendment and renewal of its Share Repurchase Program. The decision extends the program's term and updates the scope and maximum number of shares that may be acquired, reflecting a shift from preferred to common shares following a mandatory conversion in 2025. The Board also approved the company's Reference Form for 2025, which contains updated information on risk factors, management, and dividend distribution for submission to the Brazilian Securities and Exchange Commission (CVM).

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