AXIAY 6-K

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 July, 2026

Commission File Number 1-34129

AXIA Energia S.A.

(Exact name of registrant as specified in its charter)

AXIA Energia S.A.

(Translation of Registrant's name into English)

Avenida Graça Aranha, 26Centro, CEP 20030-900Rio de Janeiro, RJ, Brazil

(Address of principal executive office)

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____

Result of Fractional Share Auction – Share Conversion Rio de Janeiro, July 20, 2026 – AXIA Energia S.A. (“Company” or “AXIA Energia”), further to the Notice to the Market disclosed on June 8, 2026, informs that the auction of fractional shares arising from the conversion of Class “A1” preferred shares (“PNA1”) and Class “B1” preferred shares (“PNB1”) into common shares (“ON”) has been concluded at B3 S.A. – Brasil, Bolsa, Balcão. The conversion was carried out at the ratio of 1.1 common share for each 1 PNA1 or PNB1 share, as a result of the Company’s migration to the Novo Mercado segment, as approved at the Extraordinary General Meeting held on April 1, 2026. The auction resulted in the sale of 21,632 common shares at an average price of BRL 50.16 per share, net of applicable fees. The proceeds from the sale will be made available to the holders of the respective fractional entitlements, in proportion to their shareholdings, as of July 28, 2026. For shareholders whose banking details are not duly updated, the amounts will remain available for collection through Itaú Corretora de Valores S.A., the Company’s bookkeeping agent, for a period of 365 days, counted from July 28, 2026. Eduardo Haiama Vice-President of Finance and Investor Relations

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: July 20, 2026

FORWARD-LOOKING STATEMENTS

This document may contain estimates and projections that are not statements of past events but reflect our management’s beliefs and expectations and may constitute forward-looking statements under Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities and Exchange Act of 1934, as amended. The words “believes”, “may”, “can”, “estimates”, “continues”, “anticipates”, “intends”, “expects”, and similar expressions are intended to identify estimates that necessarily involve known and unknown risks and uncertainties. Known risks and uncertainties include, but are not limited to: general economic, regulatory, political, and business conditions in Brazil and abroad; fluctuations in interest rates, inflation, and the value of the Brazilian Real; changes in consumer electricity usage patterns and volumes; competitive conditions; our level of indebtedness; the possibility of receiving payments related to our receivables; changes in rainfall and water levels in reservoirs used to operate our hydroelectric plants; our financing and capital investment plans; existing and future government regulations; and other risks described in our annual report and other documents filed with the CVM and SEC. Estimates and projections refer only to the date they were expressed, and we do not assume any obligation to update any of these estimates or projections due to new information or future events. Future results of the Company’s operations and initiatives may differ from current expectations, and investors should not rely solely on the information contained herein. This material contains calculations that may not reflect precise results due to rounding.