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 September, 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

Corporate Taxpayer’s ID (CNPJ) 02.558.157/0001-62

Company Registry (NIRE) 35.3.001.5881-4

NOTICE TO SHAREHOLDERS

DELIBERATION OF INTEREST ON CAPITAL

Telefônica Brasil S.A. (“Company”) communicates its Shareholders that its Board of Directors, at a meeting held on September 11, 2025, approved the declaration of Interest on Capital (“IoC”), pursuant to Article 26 of the Company’s Bylaws, Article 9 of Law 9,249/95 and CVM Resolution 143/2022, in the gross amount of R$400,000,000.00 (four hundred million reais), withholding income tax at the rate of 15%, resulting in the net amount of R$340,000,000.00 (three hundred and forty million reais), based on the balance sheet of August 31, 2025. The amount per share is described in the table below:

¹ Amount per share calculated based on the shareholding position of August 29, 2025.

As established in the article 26 of the Company’s Bylaws, said IoC will be considered as part of the mandatory dividends for the fiscal year ending on December 31, 2025, ad referendum of the Ordinary General Shareholders’ Meeting to be held in 2026.

The IoC will be paid individually to each shareholder, based on the shareholding position in the Company’s records at the end of September 22, 2025. After this date, the shares will trade as “ex-IoC”. The payment of these proceeds will be made by April 30, 2026, with the Company’s Executive Board being responsible for setting the exact date.

The amount per share of Interest on Capital may be adjusted according to the Company’s shareholding base on September 22, 2025, due to possible acquisitions of shares under the current Company's Share Buyback Program.

TELEFÔNICA BRASIL S.A.

Publicly Held Company

Corporate Taxpayer’s ID (CNPJ) 02.558.157/0001-62

Company Registry (NIRE) 35.3.001.5881-4

Shareholders who are immune to or exempt from income tax, in accordance with the current legislation, must prove such conditions by September 29, 2025, to the Shares and Custody Department of Banco Bradesco S.A., the depositary institution of the Company’s book-entry shares, located at Cidade de Deus, s/n, Prédio Amarelo Velho, subsolo – Vila Yara – Zip Code: 06029-900 – Osasco – SP.

São Paulo, September 11, 2025.

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.