Telefônica Brasil (VIV) director Alonso Cesar Mascaraque files initial Form 3

Rhea-AI Filing Summary

TELEFONICA BRASIL S.A. director Alonso Cesar Mascaraque filed an initial insider ownership report on Form 3. The filing identifies him as a director of the company but does not report any stock transactions or derivative positions at this time.

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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^*

Alonso Cesar Mascaraque

(Last) (First) (Middle)

AV. ENG LUIS CARLOS BERRINI, 1376

(Street)

SAO PAULO 04571-936

(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
TELEFONICA BRASIL S.A. [ VIV ]

3a. Foreign Trading Symbol
[VIVT3]

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:

Exhibit 24.1 - Power of Attorney

No securities are beneficially owned.

	/s/ Cesar Mascaraque Alonso	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 Alonso Cesar Mascaraque Form 3 mean for TELEFONICA BRASIL S.A. (VIV)?

The Form 3 shows that Alonso Cesar Mascaraque is a director of TELEFONICA BRASIL S.A. It is an initial insider ownership report and, in this case, does not list any stock transactions or derivative positions.

Does the TELEFONICA BRASIL S.A. (VIV) Form 3 show any insider buying or selling?

No, this Form 3 for TELEFONICA BRASIL S.A. reports no insider transactions. The transaction summary shows zero buys, zero sells, and no derivative exercises, meaning no trading activity is disclosed in this filing.

What insider role is disclosed for Alonso Cesar Mascaraque at TELEFONICA BRASIL S.A. (VIV)?

The filing identifies Alonso Cesar Mascaraque as a director of TELEFONICA BRASIL S.A. He is not reported as an officer or a ten percent owner in this Form 3, based on the checked role indicators provided.

Does the TELEFONICA BRASIL S.A. (VIV) Form 3 include any derivative securities?

No, the Form 3 shows an empty derivativeSummary section. This indicates that, as of this report, there are no listed options, warrants, or other derivative positions associated with Alonso Cesar Mascaraque in the filing data.

Are there any gifts or tax-related share withholdings reported for VIV in this Form 3?

No, the transaction summary lists zero gift shares and zero tax withholding shares. This confirms there are no reported gifts, tax-withholding dispositions, or restructuring-related transfers in this particular Form 3.