Roberval Tavares de Souza - 25 May 2026 Form 4/A - Amendment Insider Report for COMPANHIA DE SANEAMENTO BASICO DO ESTADO DE SAO PAULO-SABESP (SBS)

Reporting relationship: Engineering Officer
Issuer ticker: SBS
Reported as of: 25 May 2026
Net transaction value: -$33,866
SEC form: 4/A - Amendment
Accepted by SEC: 17 Jun 2026, 16:23:29 UTC
Original report date: 29 May 2026
Prior SEC filing: 15 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Beatriz Caroline de Sousa Daher, as attorney-in-fact for Roberval Tavares de Souza

Filing notes and source

Key filing fact

Roberval Tavares de Souza filed Form 4/A - Amendment for COMPANHIA DE SANEAMENTO BASICO DO ESTADO DE SAO PAULO-SABESP (SBS) on 17 Jun 2026.

Key facts

This page summarizes Roberval Tavares de Souza's Form 4/A - Amendment filing for COMPANHIA DE SANEAMENTO BASICO DO ESTADO DE SAO PAULO-SABESP (SBS).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 17 Jun 2026, 16:23.

Change

Previous filing in this sequence was filed on 15 May 2026.
Current net transaction value: -$33,866.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4/A - Amendment disclosures.

View source filing

Reporting Owners (1)

CIK 0002119945 Primary reporting owner

Tavares de Sousa Roberval

Relationship: Engineering Officer
Address: 300 COSTA CARVALHO STREET, SAO PAULO, BRAZIL
Signature: /s/ Beatriz Caroline de Sousa Daher, as attorney-in-fact for Roberval Tavares de Souza
Signature date: 17 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SBS transaction

Common Shares

Sale

Transaction value: $33,866
Shares: -5,900
Change %: -99%
Price: $5.74
Shares after: 76
Date: 25 May 2026
Ownership: Direct
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

Equivalent to R$28.81 per share. Amounts presented were converted into U.S. dollars at the exchange rate of R$5.0174 per U.S.$1.00 as reported by Brazilian Central Bank on May 25, 2026.

SEC remarks

This Form 4/A amends the Form 4 filed on May 29, 2026 to correct the price per share reported in Table I. Due to the issuer's status as a foreign private issuer pursuant to Rule 3a12-3(b) under the Securities Exchange Act of 1934 (the "Act"), the reporting person's transactions in the issuer's equity securities are exempt from Sections 16(b) and 16(c) of the Act.