COMPANHIA DE SANEAMENTO DE MINAS GERAIS - COPASA MG
Publicly Held Company Corporate Registry (NIRE) 313.000.363-75
CNPJ No. 17.281.106/0001-03
Companhia de Saneamento de Minas Gerais - COPASA MG (B3: CSMG3) ("COMPANY" or "COPASA MG"), further to the Material Facts disclosed on November 14, 2024, November 5, 2025, December 17, 2025 and February 20, 2026, and the Notice to the Market disclosed on March 16, 2026, hereby informs its shareholders and the market in general that it has become aware of the provisional decision rendered by the Court of Accounts of the State of Minas Gerais ("TCE-MG") in the context of Monitoring Proceeding 1208049, issued at the 1stExtraordinary Session held on this date, authorizing the continuation of certain steps related to the potential subsequent public offering of shares issued by COPASA MG, to be carried out in the context of the privatization process, under the terms of State Law No. 25,664/2025 ("Offering"). The effective completion of an Offering involves, among other factors, the provision of any additional clarifications that may be requested by control bodies, the obtaining of the applicable approvals (including corporate and creditors' approvals), macroeconomic and market conditions, the execution of definitive agreements, and compliance with the procedures set forth in the regulations in force.
This Notice to the Market is for informational purposes only and does not, under any circumstances, constitute or shall be construed as an investment recommendation, an offer to sell, or a solicitation of an offer to buy any securities issued by the Company, including pursuant to the applicable legislation in Brazil, the United States of America, or in any other jurisdiction.Belo Horizonte, April 16, 2026.
Adriano Rudek de Moura
Chief Financial and Investor Relations Officer