Copel renews buyback for 285,506,846 shares

Companhia Paranaense de Energia (Copel) reports that its Board of Directors approved an amendment and renewal of its share repurchase program.

Rhea-AI Filing Summary

Companhia Paranaense de Energia (Copel) reports that its Board of Directors approved an amendment and renewal of its share repurchase program. The company may acquire up to 285,506,846 additional common shares, which together with existing treasury shares will represent 10.0% of the total outstanding common shares. There are 2,982,301,396 common shares outstanding in the market and 12,723,294 common shares already held in treasury. The renewed program runs for up to 18 months, ending on November 21, 2027, with purchases on B3 at market prices. Repurchases are limited to available profits and reserves and are not expected to affect dividend distributions, and shares may be held in treasury, canceled, sold, or used for share-based incentive plans.

Positive

• Board-approved renewal of a large share repurchase program authorizing Copel to buy back up to 285,506,846 additional common shares, equal to 10.0% of outstanding shares, potentially enhancing capital return flexibility.

Negative

• None.

Insights

Equity capital allocation analyst

Copel renews a sizable buyback authorization of up to 10% of its outstanding common shares.

Copel has extended and amended its share repurchase program, authorizing purchases of up to 285,506,846 additional common shares, equivalent to 10.0% of its outstanding float. This sits alongside 12,723,294 shares already in treasury.

The program runs through November 21, 2027, with trades executed on B3 at market prices via designated brokers. Repurchases are constrained by current-year profits and available reserves and are stated as not impacting dividend distributions.

Because this is an authorization rather than a commitment, the real effect depends on future execution volumes and pricing. Subsequent company disclosures will clarify how actively Copel uses this capacity over the program’s 18‑month term.

Key Figures

Additional buyback capacity: 285,506,846 shares Outstanding common shares: 2,982,301,396 shares Treasury shares: 12,723,294 shares +2 more

5 metrics

Additional buyback capacity 285,506,846 shares Maximum additional common shares authorized under renewed program

Outstanding common shares 2,982,301,396 shares Common shares outstanding in the market for reference

Treasury shares 12,723,294 shares Common shares already held in treasury

Buyback limit as share of float 10.0% Portion of total outstanding common shares covered by program

Program term 18 months Renewed period ending November 21, 2027

Key Terms

share repurchase program, treasury, CVM Resolutions No. 44/2021 and 77/2022, available profit and capital reserves, +1 more

5 terms

share repurchase program financial

"the amendment and renewal of the current share repurchase program, originally approved on November 25, 2024"

A share repurchase program is when a company buys back its own shares from the marketplace. This reduces the total number of shares available, which can increase the value of each remaining share and signal confidence in the company's prospects. For investors, it often suggests that the company believes its stock is undervalued or that it has extra cash to return to shareholders.

treasury financial

"acquisition of shares issued by the Company to be held in treasury, cancelled or sold"

The treasury is the department or area within a government or organization responsible for managing its money, finances, and financial strategies. It handles tasks like collecting revenue, paying bills, and planning for future financial needs, much like a household manages its budget. For investors, understanding the treasury is important because it influences interest rates, government spending, and overall economic stability.

CVM Resolutions No. 44/2021 and 77/2022 regulatory

"in compliance with the applicable norms, including CVM Resolutions No. 44/2021 and 77/2022"

available profit and capital reserves financial

"the acquisitions shall be limited to the balance of profits for the current fiscal year and available profit and capital reserves"

forward-looking statements regulatory

"This press release may contain forward-looking statements."

Forward-looking statements are predictions or plans that companies share about what they expect to happen in the future, like estimating sales or profits. They matter because they help investors understand a company's outlook, but since they are based on guesses and assumptions, they can sometimes be wrong.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Copel (ELPC) announce in its May 2026 Form 6-K?

Copel announced that its Board of Directors approved the amendment and renewal of its share repurchase program. The renewed program authorizes additional common share buybacks and extends the term, while keeping key conditions tied to profits, reserves, and dividend preservation.

How many Copel shares can be repurchased under the renewed program?

The renewed program permits Copel to acquire up to 285,506,846 additional common shares. Together with existing treasury shares, this limit equals 10.0% of the company’s total outstanding common shares currently in the market, giving a sizeable potential buyback capacity.

What is the duration of Copel’s updated share buyback program?

The updated share repurchase program runs for up to 18 months, ending on November 21, 2027. During this period, Copel’s Executive Board can decide the timing and quantity of B3 market purchases within the regulatory and internal limits described.

Will Copel’s renewed buyback program affect dividend distributions?

The company states that share acquisitions will be limited to current-year profits and available reserves and shall not affect dividend distributions. This means Copel intends to conduct buybacks without reducing its capacity to continue paying dividends to shareholders.

How many Copel shares are currently outstanding and in treasury?

Copel reports 2,982,301,396 common shares outstanding in the market and 12,723,294 common shares held in treasury. These figures provide context for the authorized 285,506,846 additional shares that may be repurchased under the amended share buyback program.

On which market will Copel execute its share repurchases?

Copel plans to carry out share repurchases on B3 S.A. – Brasil, Bolsa, Balcão at market prices. The company may use Itaú Corretora, BTG Pactual Corretora, and Morgan Stanley Corretora as intermediating financial institutions to implement the renewed program.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/21/2026 - 05:36 PM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer
Pursuant to Rule 13a-16 or 15d-16 of the

Securities Exchange Act of 1934

For the month of May, 2026

Commission File Number 1-14668

COMPANHIA PARANAENSE DE ENERGIA

(Exact name of registrant as specified in its charter)

Energy Company of Paraná

(Translation of Registrant's name into English)

José Izidoro Biazetto, 158
81200-240 Curitiba, Paraná
Federative Republic of Brazil
+55 (41) 3331-4011

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.  Form 20-F ___X___ Form 40-F _______

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934. 

Yes _______ No ___X____

MATERIAL FACT | 02/26 COMPANHIA PARANAENSE DE ENERGIA - COPEL CNPJ 76.483.817/0001-20 - NIRE 41300036535 - CVM Registration no. 1431 B3 (CPLE3) / NYSE (ELPC) / LATIBEX (XCOPO) Amendment and Renewal of the Share Buyback Program COPEL (“Company”), in compliance with the applicable norms, including CVM Resolutions No. 44/2021 and 77/2022, hereby informs its shareholders and the market in general that, on the date hereof, the Company’s Board of Directors has approved (“BoD May 21, 26”), the amendment and renewal of the current share repurchase program, originally approved on November 25, 2024 (“Program”), as follows:. (i) the Program maintains its purpose focused at the acquisition of shares issued by the Company to be held in treasury, cancelled or sold, without reduction of the amount of the Company’s share capital, as well as to meet the requirements of share-based incentive plans; (ii) the Company will be able to acquire up to 285,506,846 (two hundred and eighty-five million, five hundred and six thousand, eight hundred and forty-six) additional common shares, that, in addition to the shares currently held in treasury, will correspond to 10.0% of the total number of outstanding shares. For reference purposes, there are currently: (i) 2,982,301,396 (two billion, nine hundred and eighty-two million, three hundred and one thousand, three hundred and ninety-six) common shares outstanding in the market; and (ii) 12,723,294 (twelve million, seven hundred and twenty-three thousand, two hundred and ninety-four) common shares held in treasury (considering acquisitions previously made by the Company in the ambit of the Program and the conversion of preferred shares into common shares held on 2025); (iii) the term for acquisitions of shares under the Program was renewed for an additional period of up to eighteen (18) months, starting on this date, now ending on November 21, 2027; (iv) the acquisitions of shares shall be carried out on B3 S.A. - Brasil, Bolsa, Balcão (“B3”) at market prices, and the Company’s Executive Board shall perform all acts necessary for the implementation of the Program, including, in compliance with the limits set forth in the applicable regulation, defining the timing and quantity of shares to be acquired in a single transaction or in a series of transactions, as well as the acquisition price. (v) the acquisitions shall be limited to the balance of profits for the current fiscal year and available profit and capital reserves, and shall not affect dividend distributions. (vi) transactions may be carried out through the intermediation of the following financial institutions: Itaú Corretora de Valores S.A.; BTG Pactual Corretora de Títulos e Valores Mobiliários S.A.; and Morgan Stanley Corretora de Títulos e Valores Mobiliários S.A. The Company highlights that the terms, conditions and other characteristics of the Program, as required by the CVM regulation, are described in detail in the minutes of the Board of Directors meeting held on May 21, 2026, available for consultation on the websites of the Company (https://ri.copel.com), the Comissão de Valores Mobiliários (https://www.gov.br/cvmr) and B3 (https://www.b3.com.br). Curitiba, May 21 2026 Felipe Gutterre Vice President of Finance and Investor Relations For further information, please contact the Investor Relations team: ri@copel.com or (41) 3331-4011

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date May 21, 2026

COMPANHIA PARANAENSE DE ENERGIA – COPEL
By:	/S/  Daniel Pimentel Slaviero
	Daniel Pimentel Slaviero Chief Executive Officer

FORWARD-LOOKING STATEMENTS

This press release may contain forward-looking statements. These statements are statements that are not historical facts, and are based on management's current view and estimates of future economic circumstances, industry conditions, company performance and financial results. The words "anticipates", "believes", "estimates", "expects", "plans" and similar expressions, as they relate to the company, are intended to identify forward-looking statements. Statements regarding the declaration or payment of dividends, the implementation of principal operating and financing strategies and capital expenditure plans, the direction of future operations and the factors or trends affecting financial condition, liquidity or results of operations are examples of forward-looking statements. Such statements reflect the current views of management and are subject to a number of risks and uncertainties. There is no guarantee that the expected events, trends or results will actually occur. The statements are based on many assumptions and factors, including general economic and market conditions, industry conditions, and operating factors. Any changes in such assumptions or factors could cause actual results to differ materially from current expectations.