Companhia De Saneamento De Minas GeraisBMFBOVESPA: CSMG3

Notice to the Market - Earnings Release Schedule 4Q25 and 2025

· Issued by Companhia de Saneamento de Minas Gerais


Earnings Release Schedule 2025 and 4Q25

Companhia de Saneamento de Minas Gerais - COPASA MG (B3: CSMG4) announces its 2025 and 4Q25 earnings release schedule:

  1. Earnings Release:

    February 12, 2026 (after market closing).
  2. Prohibition Period:

    January 28, 2026 (including) to February 12, 2026 (including).

    The trading of Securities issued by the Company during the Prohibition Period must comply with the following:

    1. for the Company, Controlling Shareholder, Executive Officers, members of the Fiscal Board, members of the Statutory Audit Committee and Related Persons: the prohibition of negotiation does not depend on the knowledge, by such persons, of the content of the Financial Statements (DFs).
    2. for Related Persons in Function of a Professional, Commercial or Trustworthy Relationship (employee, consultant, independent auditor, rating company analyst, among others): the prohibition of negotiation occurs as long as they are aware of the content of the Company's DFs.
  3. Quiet Period:

    January 28, 2026 (including) to February 12, 2026 (including).

    During the Quiet Period, Persons subject to the terms of the Policy cannot publicly express themselves about the results. Enquiries not related to the results will be answered normally.

  4. Earnings Results Conference Call with simultaneous translation into English: February 13, 2026 (Friday).

11 a.m. (Brasília). 9 a.m. (New York).

2 p.m. (London).

The details for participation in the event will be informed later by the Company.

ir@copasa.com.br

+55 (31) 3250-2015

ir.copasa.com.br

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