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ENERGY CO OF MINAS GERAIS

For the period ended Sep 30, 2025. Filed Jul 30, 2025.

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About this filing

What a company based outside the US has published at home or sent to its shareholders. It is how many foreign companies share results and news between annual reports.

Sep 30, 2025 · Filed Jul 30, 2025

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CIG-C$2.82-2.8%Stored close · as of Nov 6, 2026
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Cover page

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6-K 1 cig20250729_6k.htm 6-K

United States

Securities and exchange commission

washington, d.c. 20549

FORM 6-K

report of foreign private issuer

pursuant to rule 13 a-16 or 15 d-16 of

the securities exchange act of 1934

For the month of July 2025

Commission File Number 1-15224

Energy Company of Minas Gerais

(Translation of Registrant’s Name into English)

Avenida Barbacena, 1200

30190-131 Belo Horizonte, Minas Gerais, Brazil

(Address of Principal Executive Offices)

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

Form 20-F a Form 40-F ___

Index

Item Description of Items

1.Notice to the Market dated May 20, 2025 – Injunction granted in class action against auction of 4 PCHs
2.Material Fact dated May 20, 2025 – Decision on the Annulment Action regarding the validity of the Specific Collective Agreement of health plans
3.Call Notice to Shareholders dated May 27, 2025 – Extraordinary Shareholders’ Meeting
4.Notice to Shareholders dated June 11, 2025 – First Payout Installment
5.Material Fact dated March 20, 2025 – Delisting of Shares from Latibex
6.Notice to Shareholders dated March 20, 2025 – Declaration of Interest on Equity
7.Notice to the Market dated May 8, 2025 – Executive Board’s New Composition
8.Notice to the Market dated May 14, 2025 – Cemig is recognized as one of the ten most sustainable companies on B3
9.Notice to Shareholders dated June 17, 2025 – Declaration of Interest on Equity
10.Material Fact dated May 28, 2025 – Suspension of the injunction in the collection lawsuit filed by Forluz regarding Plan A of the Supplementary Pension Plan
11.Notice to the Market dated March 12, 2025 – Clarification on Official Letter 56/2025/CVM/SEP/GEA-1, dated March 11, 2025
12.Material Fact dated July 8, 2025 – Conclusion of Delisting of Shares from Latibex

Forward-Looking Statements

This report contains statements about expected future events and financial results that are forward-looking and subject to risks and uncertainties. Actual results could differ materially from those predicted in such forward-looking statements. Factors which may cause actual results to differ materially from those discussed herein include those risk factors set forth in our most recent Annual Report on Form 20-F filed with the Securities and Exchange Commission. CEMIG undertakes no obligation to revise these forward-looking statements to reflect events or circumstances after the date hereof, and claims the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995.

SIGNATURES

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.

COMPANHIA ENERGÉTICA DE MINAS GERAIS – CEMIG

By:/s/ Andrea Marques de Almeida.

Name: Andrea Marques de Almeida

Title: Vice President of Finance and Investor Relations

Date: July 30, 2025

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