Companhia de Saneamento Básico do Estado de São Paulo SABESP : Extraordinary Shareholders Meeting - 11/24/2021 - Call Notice

Companhia de Saneamento Básico do Estado de São Paulo - Sabesp

COMPANHIA DE SANEAMENTO BÁSICO DO ESTADO DE SÃO PAULO - SABESP

PUBLICLY HELD COMPANY

Corporate Taxpayer's ID (CNPJ): 43.776.517/0001-80

Company Registry (NIRE): 35.3000.1683-1

CALL NOTICE

The shareholders of Companhia de Saneamento Básico do Estado de São Paulo - Sabesp ("Company") are hereby convened, pursuant to Article 5, paragraph 1 of the Bylaws, to attend the Company's Extraordinary Shareholders' Meeting, to be held on November 24, 2021, at 11:00 a.m., exclusively digital pursuant to CVM Instruction 481, of December 17, 2009, as amended by CVM Instruction 622, of April 17, 2020, to resolve on the following agenda:

EXTRAORDINARY SHAREHOLDERS' MEETING

1. Elect a member to the Eligibility and Advisory Committee.

1. Elect a member of the Board of Directors for a mandate term until the 2022 Annual General Meeting.

1. Classification of a member of the Board of Directors as an independent member.
   IV. Elect a sitting member and its respective alternate member of the Fiscal Council, for a mandate term until the 2022 Annual General Meeting.

1. Rectify the annual global compensation of the Management and of the members of the audit committee and fiscal council for the fiscal year of 2021, approved at the Annual
   Shareholders' Meeting of April 29, 2021.

The Extraordinary Shareholders' Meeting will be held exclusively through a digital platform, in which shareholders can participate directly, through an attorney-in-fact, or by submitting a Remote Voting Form ("RVF").Rules and procedures for the participation of shareholders in the Shareholders' Meeting are detailed on the Shareholders' Meeting Guide, available on the Company's website, ri.sabesp.com.br.

Shareholders who are willing to participate through the digital platform made available by the Company must send the required documents for participation until 11 am of November 23, 2021, according to the instructions disclosed on the Shareholders' Guide.

Lastly, it's important to stress that required documents and personal data for accreditation and participation on the meeting are solely used for this purpose and its handling is justified under the terms of Article 7, II, Law 13,709/2018 (compliance with legal obligation), based on Law 6,404/76 and correlated rules.

São Paulo, October 22, 2021.

Mario Engler Pinto Junior

Chairman of the Board of Directors