Telefonica Brasil Files 6-K Report

TL;DR

Telefonica Brasil (VIV) filed a 6-K, confirming 20-F reporting. Standard update.

AI Summary

Telefonica Brasil S.A. filed a Form 6-K on December 10, 2025, for the month of December 2025. The filing is a report of a foreign private issuer and indicates that the company files annual reports under Form 20-F. The company's principal executive office is located in Sao Paulo, Brazil.

Why It Matters

This filing provides routine updates for investors regarding Telefonica Brasil S.A.'s status as a foreign private issuer. It confirms their reporting structure with the SEC.

Risk Assessment

Risk Level: low — This is a routine administrative filing for a foreign private issuer and does not contain new financial or operational information.

Key Numbers

• 001-14475 — SEC File Number (Identifies the specific filing with the SEC.)
• 20251210 — Filing Date (Date the report was submitted to the SEC.)

Key Players & Entities

• TELEFONICA BRASIL S.A. (company) — Registrant
• VIV (company) — Ticker Symbol (implied)
• 001-14475 (dollar_amount) — SEC File Number
• 20251210 (dollar_amount) — Filing Date
• 20251231 (dollar_amount) — Period of Report

FAQ

Key Financial Figures

• $232 m — hase agreement, for an amount of up to R$232 million, of which R$212 million was paid
• $212 million — mount of up to R$232 million, of which R$212 million was paid in a single installment on the
• $20 million — igning date of the contract, and up to R$20 million as earn-out, to be paid in 2027, based
• $48 million — nses used in its operations, for which R$48 million will be paid in a single installment.

Filing Documents

• viv20251209_6k.htm (6-K) — 25KB
• viv202512096k_001.jpg (GRAPHIC) — 9KB
• 0001292814-25-004202.txt ( ) — 38KB

From the Filing

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 December, 2025 Commission File Number: 001-14475 TELEFNICA 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 Lus Carlos Berrini, 1376 - 28 andar So 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: Form 20-F X 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): Yes No X Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): Yes No X TELEFÔNICA BRASIL S.A. Publicly Held Company CNPJ/MF No. 02.558.157/0001-62 – NIRE 35.3.0015881-4 NOTICE TO THE MARKET Telefônica Brasil S.A. (“ Company ”) (B3: VIVT3; NYSE: VIV) hereby informs its shareholders and the market in general that, on this date, its indirect subsidiary Telefônica Infraestrutura e Segurança Ltda. (“ TIS ”) has completed, with Telefónica Cybersecurity & Cloud Tech, S.L. (“ TTech ”), the acquisition of all shares issued by Telefônica Cibersegurança e Tecnologia do Brasil Ltda. (“ CyberCo Brasil ”), under the terms of the share purchase agreement, for an amount of up to R$232 million, of which R$212 million was paid in a single installment on the signing date of the contract, and up to R$20 million as earn-out, to be paid in 2027, based on CyberCo Brasil’s service revenue in 2026 (“ Transaction ”). Furthermore, CyberCo Brasil will enter into an Asset Purchase Agreement with TTech to acquire certain perpetual software licenses used in its operations, for which R$48 million will be paid in a single installment. CyberCo Brasil develops integrated cybersecurity and information security solutions, including devices, networks, cloud, identity management, incident and vulnerability response, as well as consulting services, project design and software and hardware resale with a team of more than 300 specialists. The Transaction aims to expand the portfolio of information security solutions, optimize service offerings, accelerate launches, integrate the sales force, and strengthen the growth strategy in digital solutions with a customer-centric focus. The documents formalizing the transactions contain terms and provisions common to this type of operation, and do not depend on obtaining any regulatory authorizations or additional approvals beyond those already obtained in accordance with the Company’s internal governance. The acquisitions were preceded by an independent valuation, confirming that the negotiated amounts are in line with market practices and accurately reflect the economic potential of the business. São Paulo, December 9, 2025. David Melcon Sanchez-Friera CFO and Investor Relations Officer Telefônica Brasil – Investor Relations Email: ir.br@telefonica.com 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. TELEFNICA BRASIL S.A. Date: December 9, 2025 By: /s/ João Pedro Carneiro Name: João Pedro Carneiro Title: Investor Relations Director

View Full Filing

View this 6-K filing on SEC EDGAR