CPFL Energia S A : Notice to Shareholders - Dividends

‌Notice to Shareholders

CPFL Energia S.A. ("CPFL Energia" or "Company") (B3: CPFE3) hereby informs its shareholders and the market about the payment of the last installment of the dividends declared in the Annual General Shareholders' Meeting (AGM) of April 29th, 2025. The seventh payment will be made in the amount of R$ 299,602,566.81 (two hundred ninety-nine million, six hundred two thousand, five hundred sixty-six reais and eighty-one cents) on December 15th, 2025.

We remind you that Shareholders owning shares on April 29th, 2025 are entitled to receive the dividends. Shares were traded "ex-dividend" at the Brazilian Stock Exchange (B3 S.A. - Brasil, Bolsa, Balcão, or "B3") as of April 30th, 2025.

For the shareholders holding shares deposited with Banco do Brasil, the institution responsible for the Company's bookkeeping of shares, the amounts will be credited through their bank accounts, according to the shareholders registration details on the registry of Banco do Brasil.

The payments related to shares deposited with B3's depositary will be credited to such entity and the Custodian Institutions will be responsible for transferring them to the respective shareholders.

Registration Update: Shareholders are reminded of the importance of updating their registration data, so that the payment of dividends can be carried out. The necessary procedures for those included in this case are available on the IR website. To access it, click here.

Campinas, December 4th, 2025.

Kedi Wang

Chief Financial and Investor Relations Officer

For further information, please contact the Investor Relations: [e-mail]