CPFL Energia S A : Notice to Shareholders - Dividends

CPFL ENERGIA S.A.

Publicly-held Company

CNPJ 02.429.144/0001-93 - NIRE 353.001.861-33

NOTICE TO SHAREHOLDERS

CPFL Energia S.A. ("CPFL Energia" or "Company") (B3: CPFE3) hereby informs its shareholders and the market about the payment of another two installment of the dividends approved throughout 2023.

The fourth (and last) payment will be made on November 17th, 2023, in the amount of R$ 500,000,000.00 (five hundred million reais), relating to dividends declared at the Annual General Shareholders' Meeting (AGM) held on April 28th, 2023, of the 2022 fiscal year, and the first payment, in the amount of R$ 200,000,000.00 (two hundred million reais), referring to the additional dividends declared at the meeting of the Board of Directors (BoD) held on August 10th, 2023, thus totaling the amount of R$ 700,000,000.00 (seven hundred million reais).

Therefore, the declarations and dividend payments for the year 2023 are summarized below:

2023 Dividends (R$)

Notes: (1) Record Date: 04/28/2023, Ex Date: 05/02/2023; (2) Record Date: 08/17/2023, Ex Date: 08/18/2023.

For the shareholders holding shares deposited with Banco do Brasil, the financial 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:

We also remind shareholders of the importance of updating their registration data, so that the payment of dividends can be effected. Find below the necessary procedures for those included in this case:

• Shareholders with shares deposited with Banco do Brasil: these shareholders should go to a branch of such bank, in order to update the registration, to sign the receipt option term ("termo de opção de recebimento"), which indicates the bank, the current account and the bank branch for depositing the credits, and will acknowledge the conditions of the type of credit involved (DOC/TED/CASH). They should also take to the bank the following original documents: ID card (RG), individual

taxpayer's ID (CPF) and proof of residence, income and bank account and, if applicable, the document evidencing the unblocking of shares;

• Shareholders with shares deposited with CBLC: these shareholders should request their registration update directly from the custodial agent with whom they normally operate and also update their registration at Banco do Brasil.

Campinas, November 9th, 2023.

CPFL Energia S.A.

Yuehui Pan

Chief Financial and Investor Relations Officer