SEC Form 6-K filed by Telefonica Brasil S.A.

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of April, 2025

Commission File Number: 001-14475

TELEFÔNICA BRASIL S.A.
(Exact name of registrant as specified in its charter)

TELEFONICA BRAZIL S.A.  
(Translation of registrant’s name into English)

Av. Eng° Luís Carlos Berrini, 1376 -  28º andar
São Paulo, S.P.
Federative Republic of Brazil
(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):

TELEFÔNICA BRASIL S.A.

Publicly Held Company

CNPJ No. 02.558.157/0001-62 - NIRE 35.3.0015881-4

NOTICE TO THE MARKET

Telefônica Brasil S.A. ("Company") (B3: VIVT3; NYSE: VIV), in addition to the Material Fact disclosed on December 16^th, 2024, informs its shareholders and the market in general that, on April 11^th, 2025, the Company celebrated the Single Term of Authorization before Anatel (National Telecommunications Agency).

With the celebration of the Single Term of Authorization, the final step for the effective adaptation from the Concession regime of the Switched Fixed Telephone Service (STFC) to the private Authorization regime of the Switched Fixed Telephone Service (STFC) has been completed.

São Paulo, April 11^th, 2025.

David Melcon Sanchez-Friera

CFO and Investor Relations Officer

Telefônica Brasil - Investor Relations

Email: [email protected]

https:/ri.telefonica.com.br/en

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.