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COMPANHIA DE SANEAMENTO BASICO DO ESTADO DE SAO PAULO-SABESP

For the period ended Mar 31, 2026. Filed May 8, 2026.

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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.

Mar 31, 2026 · Filed May 8, 2026

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SBS$4.81+5.5%Stored close · as of Nov 6, 2026
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Contents

(b) Changes

Individual
December 31, 2025AdditionsTransfer of contract asset and other concession assetsTransfersWrite-offs and disposalsAmortizationMarch 31, 2026
Intangible assets arising from:
Concession agreements – others75,089—222(2)—(1,048)74,261
Contract Commitments3,730,121————(33,020)3,697,101
Concession Agreements URAE-1 (*)45,946,471—388,4368,010(393)(581,849)45,760,675
Software license of use551,102————(45,740)505,362
Right of use – other assets51,968————(17,522)34,446
Total50,354,751—388,6588,008(393)(679,179)50,071,845

Companhia de Saneamento Básico do Estado de São Paulo – SABESP Notes to the Financial Statements for thePeriod ended March 31, 2026In thousands of reais, unless otherwise stated

Consolidated
December 31, 2025AdditionsTransfer of contract assetTransfersWrite-offs and disposalsAmortizationBusiness combination (Note 4)March 31, 2026
Intangible assets arising from:
Concession agreements – new contracts137,723————(1,235)—136,488
Concession agreements – others75,088—222(2)—(1,048)—74,260
Contract Commitments3,730,121————(33,020)—3,697,101
Concession Agreements URAE-1 (*)45,946,471—388,4368,010(393)(581,849)—45,760,675
Software license of use551,102————(45,740)19,253524,615
Right of use – other assets51,968————(17,522)—34,446
Goodwill/identifiable asset——————504,910504,910
Total50,492,473—388,6588,008(393)(680,414)524,16350,732,495

(*) As of March 31, 2026, the line URAE-1 concession agreement included leases totaling R$ 149,164 (R$ 154,449 as of December 31, 2025). Also on this date, the accounting balance of intangible assets, contract assets and other concession assets, and financial assets of the concession aimed at URAE-1 amounted to R$ 83,208,920, accounting for 95.57% of the consolidated amount.

Individual
December 31, 2024AdditionsTransfer of contract assetTransfersWrite-offs and disposalsAmortizationTransfer to Financial AssetsMarch 31, 2025
Intangible assets arising from:
Concession agreements – others59,492—1012—(1,075)—58,439
Contract Commitments3,849,759————(32,117)—3,817,642
Concession Agreements URAE-1 (*)39,956,1941,245747,68821,429(874)(472,288)(168,104)40,085,290
Software license of use638,287—10,314——(48,338)—600,263
Right of use – other assets124,736————(19,127)—105,609
Total44,628,4681,245758,01221,441(874)(572,945)(168,104)44,667,243
Consolidated
December 31, 2024 · Additions · Transfer of contract asset · Transfers · Write-offs and disposals · Amortization · Transfer to Financial Assets · March 31, 2025
Intangible assets arising from:
Concession agreements – new contracts142,656——————(1,234)—141,422
Concession agreements – others59,4921012—(1,075)—58,439
Contract Commitments3,849,759——————(32,117)—3,817,642
Concession Agreements URAE-1 (*)39,956,1941,245747,68821,429(874)(472,288)(168,104)40,085,290
Software license of use638,287—10,314——(48,338)—600,263
Right of use – other assets124,736————(19,127)—105,609
Total44,771,1241,245758,01221,441(874)(574,179)(168,104)44,808,665

(*) As of March 31, 2025, the line URAE-1 concession agreement included leases totaling R$ 329,624 (R$ 338,740 as of December 31, 2024), respectively.

Companhia de Saneamento Básico do Estado de São Paulo – SABESP Notes to the Financial Statements for thePeriod ended March 31, 2026In thousands of reais, unless otherwise stated

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