SABESP (SBS) director Marcio de Oliveira Anderson files clean Form 3

Rhea-AI Filing Summary

COMPANHIA DE SANEAMENTO BASICO DO ESTADO DE SAO PAULO-SABESP reported a new insider filing for director Marcio de Oliveira Anderson. This Form 3 is an initial statement of beneficial ownership and, in this case, shows no reported transactions or derivative positions.

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Accepted by SEC EDGAR 03/19/2026 - 06:31 AM Learn about SEC filing dates

FAQ

What does the SABESP (SBS) Form 3 filing by Marcio de Oliveira Anderson show?

The Form 3 filing for SABESP reports that director Marcio de Oliveira Anderson has filed an initial statement of beneficial ownership. The data provided shows no reported transactions or derivative positions associated with this insider at the time of the filing.

Did Marcio de Oliveira Anderson buy or sell SABESP (SBS) shares in this Form 3?

No transactions are reported in this Form 3 for SABESP. The transaction summary lists zero buys, sells, acquisitions, dispositions, gifts, tax withholdings, or restructurings, indicating only an initial ownership filing without trading activity disclosed.

What insider role is disclosed for Marcio de Oliveira Anderson at SABESP (SBS)?

The filing identifies Marcio de Oliveira Anderson as a director of SABESP. The metadata flags him as a director, with no officer role or ten percent owner status indicated, clarifying his governance position within the company’s leadership structure.

Are there any derivative securities reported for Marcio de Oliveira Anderson at SABESP (SBS)?

No derivative securities are reported for Marcio de Oliveira Anderson. The derivativeSummary is empty and the transaction summary shows zero derivative transactions or exercises, indicating no options, warrants, or similar instruments disclosed in this Form 3 excerpt.

Does the SABESP (SBS) Form 3 include any gifts or tax withholding share movements?

The Form 3 shows no gifts or tax-related share withholdings. GiftCount and taxWithholdingCount are both zero, with corresponding share amounts also zero, indicating no such movements in the insider’s reported ownership at this time.

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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Marcio de Oliveira Anderson

(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 Anderson Marcio de Oliveira	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)