SABESP (SBS) director Karla Bertocco Trindade submits initial Form 3

Rhea-AI Filing Summary

COMPANHIA DE SANEAMENTO BASICO DO ESTADO DE SAO PAULO-SABESP director Karla Bertocco Trindade has filed an initial Form 3, which is a required statement of beneficial ownership for insiders. This filing does not report any stock purchases, sales, option exercises, gifts, or other transactions.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Bertocco Trindade Karla

(Last) (First) (Middle)

300 COSTA CARVALHO STREET

(Street)

SAO PAULO 05429-900

(City) (State) (Zip)

BRAZIL

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
COMPANHIA DE SANEAMENTO BASICO DO ESTADO DE SAO PAULO-SABESP [ SBSP3 ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

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. Exhibit 24 - Power of Attorney.

No securities are beneficially owned.

	/s/ Beatriz Caroline de Sousa Daher, as attorney-in-fact for Karla Bertocco Trindade	03/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What does the SABESP (SBS) Form 3 filing by Karla Bertocco Trindade mean?

The Form 3 filing records Karla Bertocco Trindade as a director and insider of SABESP. It is an initial statement of beneficial ownership required when someone becomes an insider, and in this case it reports no share transactions or derivative positions.

Does the SABESP (SBS) Form 3 show any insider buying or selling?

No, the Form 3 for SABESP shows no insider buying or selling. The transaction summary lists zero purchases, sales, exercises, gifts, tax withholdings, or restructurings, indicating only a status update of insider ownership, not an actual trade in the company’s shares.

Who is the reporting person in the SABESP (SBS) Form 3 filing?

The reporting person is Karla Bertocco Trindade, identified as a director of SABESP. She is not reported as an officer or ten percent owner. The filing formally registers her insider status with regulators without disclosing any concurrent security transactions.

Are any derivative securities disclosed in the SABESP (SBS) Form 3?

No derivative securities are disclosed in this Form 3 for SABESP. The derivativeSummary section is empty and derivativeTransactionCount is zero, indicating there are no options, warrants, or other derivative positions reported for the director in this initial ownership statement.

Does the SABESP (SBS) Form 3 affect existing shareholders?

This Form 3 is largely administrative and does not directly affect existing shareholders. It simply records that a company director, Karla Bertocco Trindade, is an insider. With no reported trades or derivative holdings, it does not change the share count or ownership structure.

What transaction activity is summarized in the SABESP (SBS) Form 3?

The transaction summary in the SABESP Form 3 shows zero activity across all categories. There are no buys, sells, exercises, gifts, tax withholdings, or restructurings, and netBuySellDirection is neutral, confirming this filing reports status only, without any insider trading activity.