# EDGAR Filing Document

**Accession Number:** 0001066119
**File Stem:** 0001292814-26-003149
**Filing Date:** 2026-5
**Character Count:** 285545
**Document Hash:** 5b799216676d1932c97652ca3442417a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001292814-26-003149.hdr.sgml**: 20260521

**ACCESSION NUMBER**: 0001292814-26-003149

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260331

**FILED AS OF DATE**: 20260521

**DATE AS OF CHANGE**: 20260521

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** TELEFONICA BRASIL S.A.
- **CENTRAL INDEX KEY:** 0001066119
- **STANDARD INDUSTRIAL CLASSIFICATION:** TELEPHONE COMMUNICATIONS (NO RADIO TELEPHONE) [4813]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 000000000

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-14475
- **FILM NUMBER:** 261009849

**BUSINESS ADDRESS:**
- **STREET 1:** AVENIDA ENGENHEIRO LUIS CARLOS BERRINI,
- **STREET 2:** 1376, CIDADE MONCOES
- **CITY:** SAO PAULO-SP
- **STATE:** D5
- **ZIP:** 04571-936
- **BUSINESS PHONE:** 55 11 3430-3687

**MAIL ADDRESS:**
- **STREET 1:** AVENIDA ENGENHEIRO LUIS CARLOS BERRINI,
- **STREET 2:** 1376, CIDADE MONCOES
- **CITY:** SAO PAULO-SP
- **STATE:** D5
- **ZIP:** 04571-936

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** TELESP HOLDING CO
- **DATE OF NAME CHANGE:** 20051028

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** TELESP PARTICIPACOES SA
- **DATE OF NAME CHANGE:** 19980716

------

**UNITED STATES<br>SECURITIES AND EXCHANGE COMMISSION<br>Washington, D.C. 20549<br>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 May, 2026**

**Commission File Number: 001-14475**

------

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

**TELEFONICA BRAZIL S.A.** <br>**(Translation of registrant's name into English)**

**Av. Eng° Luís Carlos Berrini, 1376 - 28º andar**<br> **São Paulo, S.P.** <br> **Federative Republic of Brazil**<br> (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 <u> X</u> 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):

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| | | |
|:---|:---|:---|
| Yes  | No | X <br>|

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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):

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| | | |
|:---|:---|:---|
| Yes  | No | X <br>|

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------

![](image_001.jpg)

(A free translation of the original in Portuguese)

Telefônica Brasil S.A.

**Parent company and consolidated<br> interim financial statements at** 

**March 31, 2026<br> and report on review**

**Report on review of parent company and<br> consolidated interim financial statements**

To the Board of Directors and Shareholders

Telefônica Brasil S.A.

**Introduction**

We have reviewed the accompanying interim balance sheet of Telefônica Brasil S.A. ("Company") as at March 31, 2026 and the related statements of income and comprehensive income for the three-month period then ended, and the statements of changes in equity and cash flows for the three-month period then ended, as well as the accompanying consolidated interim balance sheet of Telefônica Brasil S.A. and its subsidiaries ("Consolidated") as at March 31, 2026 and the related consolidated statements of income and comprehensive income for the three-month period then ended, and the consolidated statements of changes in equity and cash flows for the three-month period then ended, and Notes, comprising material accounting policies and other explanatory information.

Management is responsible for the preparation and fair presentation of these parent company and consolidated interim financial statements in accordance with the accounting standard CPC 21 - Interim Financial Reporting, of the Brazilian Accounting Pronouncements Committee (CPC), and International Accounting Standard (IAS) 34 - Interim Financial Reporting, of the International Accounting Standards Board (IASB). Our responsibility is to express a conclusion on these interim financial statements based on our review.

**Scope of review**

We conducted our review in accordance with Brazilian and International Standards on Reviews of Interim Financial Information (NBC TR 2410 - Review of Interim Financial Information Performed by the Independent Auditor of the Entity, and ISRE 2410 - Review of Interim Financial Information Performed by the Independent Auditor of the Entity, respectively). A review of interim information consists of making inquiries, primarily of persons responsible for financial and accounting matters, and applying analytical and other review procedures. A review is substantially less in scope than an audit conducted in accordance with Brazilian and International Standards on Auditing and consequently does not enable us to obtain assurance that we would become aware of all significant matters that might be identified in an audit. Accordingly, we do not express an audit opinion.

**Conclusion**

Based on our review, nothing has come to our attention that causes us to believe that the accompanying parent company and consolidated interim financial statements referred to above do not present fairly, in all material respects, the financial position of the Company and of the Company and its subsidiaries as at March 31, 2026, and the parent company financial performance for the quarter and three-month period then ended and its cash flows for the three-month period then ended, as well as the consolidated financial performance for the three-month period then ended and the consolidated cash flows for the three-month period then ended, in accordance with CPC 21 and IAS 34.

**Other matters - Statements of value added**

The interim financial statements referred to above include the parent company and consolidated statements of value added for the three-month period ended March 31, 2026. These statements are the responsibility of the Company's management and are presented as supplementary information under IAS 34. These statements have been subjected to review procedures performed together with the review of the interim financial statements for the purpose concluding whether they are reconciled with the interim financial statements and accounting records, as applicable, and if their form and content are in accordance with the criteria defined in the accounting standard CPC 09 - "Statement of Value Added". Based on our review, nothing has come to our attention that causes us to believe that these statements of value added have not been properly prepared, in all material respects, in accordance with the criteria established in this accounting standard, and that they are consistent with the parent company and consolidated interim financial statements taken as a whole.

São Paulo, May 8, 2026

PricewaterhouseCoopers

Auditores Independentes Ltda.

CRC 2SP000160/O-5

Vinícius Ferreira Britto Rego

Contador CRC 1BA024501/O-9

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **QUARTERLY INFORMATION** | **QUARTERLY INFORMATION** |

---

**Contents**

---

| | |
|:---|:---|
| **[INDIVIDUAL AND CONSOLIDATED INTERIM BALANCE SHEETS](#a0acd98c0547443d89b5ded8969431417)** | **[1](#a0acd98c0547443d89b5ded8969431417)** |
| **[INDIVIDUAL AND CONSOLIDATED STATEMENTS OF INCOME](#a4123790ae07c493d8034d50b56425eb1)** | **[3](#a4123790ae07c493d8034d50b56425eb1)** |
| **[INDIVIDUAL AND CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY](#ab2fb9ab22104f97831f05f6b638700d)** | **[4](#ab2fb9ab22104f97831f05f6b638700d)** |
| **[INDIVIDUAL AND CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME](#a70bb680bcb8946b3a7000b2efe90231d)** | **[5](#a70bb680bcb8946b3a7000b2efe90231d)** |
| **[INDIVIDUAL AND CONSOLIDATED STATEMENTS OF VALUE ADDED](#eb59eaa0e33e4332968ff9d9e02aed17)** | **[6](#eb59eaa0e33e4332968ff9d9e02aed17)** |
| **[INDIVIDUAL AND CONSOLIDATED STATEMENTS OF CASH FLOWS](#a0e67f3e216f0424c9f78f631b92de1eb)** | **[7](#a0e67f3e216f0424c9f78f631b92de1eb)** |
| **[NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION](#a044b3c3cfbc431f82df3e86d2f3008c)** | **[8](#a044b3c3cfbc431f82df3e86d2f3008c)** |
| &nbsp;&nbsp;&nbsp;&nbsp;[1. OPERATIONS](#a93bfb4048bc44a798b4519bba35499e9) | [8](#a93bfb4048bc44a798b4519bba35499e9) |
| &nbsp;&nbsp;&nbsp;&nbsp;[2. BASIS OF PREPARATION AND PRESENTATION OF INDIVIDUAL AND CONSOLIDATED QUARTERLY FINANCIAL INFORMATION](#a06f73c92ee614ae8b947c7a887e1d47a) | [11](#a06f73c92ee614ae8b947c7a887e1d47a) |
| &nbsp;&nbsp;&nbsp;&nbsp;[3. CASH AND CASH EQUIVALENTS](#f09e866d4b8840f1a8d9341dc2c5c009) | [13](#f09e866d4b8840f1a8d9341dc2c5c009) |
| &nbsp;&nbsp;&nbsp;&nbsp;[4. FINANCIAL INVESTMENTS](#a3398a7516b54485b15f96caf49f557c) | [13](#a3398a7516b54485b15f96caf49f557c) |
| &nbsp;&nbsp;&nbsp;&nbsp;[5. TRADE ACCOUNTS RECEIVABLE](#cee451cab0b34047b4b50fd68cdafc8a) | [14](#cee451cab0b34047b4b50fd68cdafc8a) |
| &nbsp;&nbsp;&nbsp;&nbsp;[6. INVENTORIES](#d1a6f4ccc72b4fd09924a78f0e0d0fa4) | [15](#d1a6f4ccc72b4fd09924a78f0e0d0fa4) |
| &nbsp;&nbsp;&nbsp;&nbsp;[7. PREPAID EXPENSES](#a32c0521d85644839815694f8075d2835) | [16](#a32c0521d85644839815694f8075d2835) |
| &nbsp;&nbsp;&nbsp;&nbsp;[8. INCOME AND SOCIAL CONTRIBUTION TAXES](#a420ba6747b7c40a696bdcb658b61f21c) | [16](#a420ba6747b7c40a696bdcb658b61f21c) |
| &nbsp;&nbsp;&nbsp;&nbsp;[9. TAXES, CHARGES AND CONTRIBUTIONS RECOVERABLE](#a877ea131e8f4475bde3832ea4043faa) | [21](#a877ea131e8f4475bde3832ea4043faa) |
| &nbsp;&nbsp;&nbsp;&nbsp;[10. JUDICIAL DEPOSITS AND GARNISHMENTS](#a047a1c2bad9c4a6cb2143a559b5568f0) | [21](#a047a1c2bad9c4a6cb2143a559b5568f0) |
| &nbsp;&nbsp;&nbsp;&nbsp;[11. OTHER ASSETS](#a3fb0a9d82aea4838a549e31cc9638a06) | [22](#a3fb0a9d82aea4838a549e31cc9638a06) |
| &nbsp;&nbsp;&nbsp;&nbsp;[12. INVESTMENTS](#aec10e5bcd37461cbe6299e40666908e) | [22](#aec10e5bcd37461cbe6299e40666908e) |
| &nbsp;&nbsp;&nbsp;&nbsp;[13. PROPERTY, PLANT AND EQUIPMENT (PP&E)](#a0da717f3c2d840da8341dde458712c55) | [25](#a0da717f3c2d840da8341dde458712c55) |
| &nbsp;&nbsp;&nbsp;&nbsp;[14. INTANGIBLE ASSETS](#a6c4e0c1e8c614121ad26a378a1a349fa) | [28](#a6c4e0c1e8c614121ad26a378a1a349fa) |
| &nbsp;&nbsp;&nbsp;&nbsp;[15. PERSONNEL, SOCIAL CHARGES AND BENEFITS](#e8a87bf7ce8f485bb6e9ad8f59ffddcf) | [30](#e8a87bf7ce8f485bb6e9ad8f59ffddcf) |
| &nbsp;&nbsp;&nbsp;&nbsp;[16. TRADE ACCOUNTS PAYABLE](#a828c6a0bc62e4c358791bdeaa741a658) | [30](#a828c6a0bc62e4c358791bdeaa741a658) |
| &nbsp;&nbsp;&nbsp;&nbsp;[17. TAXES, CHARGES AND CONTRIBUTIONS PAYABLE](#a0c533fdf50454273b8f9eea5e7cc4000) | [30](#a0c533fdf50454273b8f9eea5e7cc4000) |
| &nbsp;&nbsp;&nbsp;&nbsp;[18. DIVIDENDS AND INTEREST ON EQUITY](#a35f4b0df96c740e48dd5ac3c1e89a9ed) | [31](#a35f4b0df96c740e48dd5ac3c1e89a9ed) |
| &nbsp;&nbsp;&nbsp;&nbsp;[19. PROVISION AND CONTINGENCIES](#a05cc99bba9a7430fa03872605d38f177) | [31](#a05cc99bba9a7430fa03872605d38f177) |
| &nbsp;&nbsp;&nbsp;&nbsp;[20. LOANS, FINANCING, DEBENTURES, LEASES AND OTHER CREDITORS](#e7a4c12e1b3b48b083753d31a9086a07) | [41](#e7a4c12e1b3b48b083753d31a9086a07) |
| &nbsp;&nbsp;&nbsp;&nbsp;[21. DEFERRED REVENUE](#a9e36fdd2506441e6a9d85641dfe7f4f7) | [44](#a9e36fdd2506441e6a9d85641dfe7f4f7) |
| &nbsp;&nbsp;&nbsp;&nbsp;[22. OTHER LIABILITIES](#a79c36c029754480089758f63f9105869) | [44](#a79c36c029754480089758f63f9105869) |
| &nbsp;&nbsp;&nbsp;&nbsp;[23. EQUITY](#a0f9c72f686d244f2a07f08b52e5e43d7) | [44](#a0f9c72f686d244f2a07f08b52e5e43d7) |
| &nbsp;&nbsp;&nbsp;&nbsp;[24. NET OPERATING REVENUE](#a80513c69157a40519523ad4f64177621) | [50](#a80513c69157a40519523ad4f64177621) |
| &nbsp;&nbsp;&nbsp;&nbsp;[25. OPERATING COSTS AND EXPENSES](#a7c9a3ff881db4332b37ba7f6970b9e34) | [51](#a7c9a3ff881db4332b37ba7f6970b9e34) |
| &nbsp;&nbsp;&nbsp;&nbsp;[26. OTHER INCOME (EXPENSES), NET](#a255b1680052a4ce3a1208804e507c6b1) | [52](#a255b1680052a4ce3a1208804e507c6b1) |
| &nbsp;&nbsp;&nbsp;&nbsp;[27. FINANCIAL INCOME (EXPENSES), NET](#a6ebd02a62319499a9378ca914cd8d00e) | [52](#a6ebd02a62319499a9378ca914cd8d00e) |
| &nbsp;&nbsp;&nbsp;&nbsp;[28. BALANCES AND TRANSACTIONS WITH RELATED PARTIES](#a16dcd412de7844f4b280ffdf6900c22c) | [53](#a16dcd412de7844f4b280ffdf6900c22c) |
| &nbsp;&nbsp;&nbsp;&nbsp;[29. SHARE-BASED PAYMENT PLANS](#a65c64c7796084945983f219037de8be2) | [56](#a65c64c7796084945983f219037de8be2) |
| &nbsp;&nbsp;&nbsp;&nbsp;[30. PENSION PLANS AND OTHER POST-EMPLOYMENT BENEFITS](#a869ff0068db943e3aa54fad5afeeb9f9) | [58](#a869ff0068db943e3aa54fad5afeeb9f9) |
| &nbsp;&nbsp;&nbsp;&nbsp;[31. FINANCIAL INSTRUMENTS AND RISK AND CAPITAL MANAGEMENT](#a804ee8b618f14a88b47438ad15553fe0) | [59](#a804ee8b618f14a88b47438ad15553fe0) |
| &nbsp;&nbsp;&nbsp;&nbsp;[32. SUPPLEMENTAL CASH FLOW INFORMATION](#a3111b8213f2847cf8c19f72eb44ec82e) | [69](#a3111b8213f2847cf8c19f72eb44ec82e) |
| &nbsp;&nbsp;&nbsp;&nbsp;[33. CONTRACTUAL COMMITMENTS AND GUARANTEES](#a0859cd519db242e8a88b564be723dcb1) | [69](#a0859cd519db242e8a88b564be723dcb1) |
| &nbsp;&nbsp;&nbsp;&nbsp;[34. OTHER MATTERS](#a6c93303c8ca14bed9e1520b42dc69ab0) | [70](#a6c93303c8ca14bed9e1520b42dc69ab0) |
| &nbsp;&nbsp;&nbsp;&nbsp;[35. SUBSEQUENT EVENTS](#a0cde74abb7a7469499988caa0b603377) | [71](#a0cde74abb7a7469499988caa0b603377) |

---

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **INDIVIDUAL AND CONSOLIDATED INTERIM BALANCE SHEETS** | **INDIVIDUAL AND CONSOLIDATED INTERIM BALANCE SHEETS** |
| On March 31, 2026 and December 31, 2025 | On March 31, 2026 and December 31, 2025 |
| (In thousands of Reais) | |

---

 **INDIVIDUAL AND CONSOLIDATED INTERIM BALANCE SHEETS**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | | **Company** | **Company** | **Consolidated** | **Consolidated** |
| **ASSETS** | <br>**Note** | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| **Current assets** |  | **26755932** | **23385913** | **28632662** | **25220293** |
| &nbsp;&nbsp;&nbsp;Cash and cash equivalents | 3 | 8595713 | 6538941 | 9063090 | 7032339 |
| &nbsp;&nbsp;&nbsp;Financial investments | 4 |  |  | 88748 | 99102 |
| &nbsp;&nbsp;&nbsp;Trade accounts receivable | 5 | 9755215 | 10082818 | 10302438 | 10619617 |
| &nbsp;&nbsp;&nbsp;Inventories | 6 | 1681227 | 1404872 | 1756371 | 1475998 |
| &nbsp;&nbsp;&nbsp;Prepaid expenses | 7 | 3097025 | 1891448 | 3636621 | 2414780 |
| &nbsp;&nbsp;&nbsp;Income and social contribution taxes recoverable | 8.a | 336663 | 335171 | 355369 | 356286 |
| &nbsp;&nbsp;&nbsp;Taxes, charges and contributions recoverable | 9 | 2571428 | 2571664 | 2714969 | 2687600 |
| &nbsp;&nbsp;&nbsp;Judicial deposits and garnishments | 10 | 117347 | 106279 | 120097 | 107565 |
| &nbsp;&nbsp;&nbsp;Derivative financial instruments | 31.a | 92848 | 7605 | 93137 | 7706 |
| &nbsp;&nbsp;&nbsp;Other assets | 11 | 508466 | 447115 | 501822 | 419300 |
| **Non-current assets** |  | **100513633** | **101470083** | **101852290** | **102851415** |
| &nbsp;&nbsp;&nbsp;**Long-term assets** |  | **6783039** | **6451321** | **7438164** | **7105040** |
| &nbsp;&nbsp;&nbsp;&nbsp;Financial investments | 4 | 67379 | 40934 | 67801 | 41308 |
| &nbsp;&nbsp;&nbsp;&nbsp;Trade accounts receivable | 5 | 349040 | 241571 | 391100 | 283502 |
| &nbsp;&nbsp;&nbsp;&nbsp;Prepaid expenses | 7 | 2562506 | 2414356 | 2642765 | 2495725 |
| &nbsp;&nbsp;&nbsp;&nbsp;Deferred taxes | 8.c |  |  | 310017 | 314284 |
| &nbsp;&nbsp;&nbsp;&nbsp;Taxes, charges and contributions recoverable | 9 | 632405 | 614267 | 635622 | 618918 |
| &nbsp;&nbsp;&nbsp;&nbsp;Judicial deposits and garnishments | 10 | 2664622 | 2647422 | 2875836 | 2856753 |
| &nbsp;&nbsp;&nbsp;&nbsp;Derivative financial instruments | 31.a | 39304 | 6147 | 40227 | 8622 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other assets | 11 | 467783 | 486624 | 474796 | 485928 |
| &nbsp;&nbsp;&nbsp;**Investments** | 12.b | **2644196** | **2631934** | **413299** | **420877** |
| &nbsp;&nbsp;&nbsp;**Property, plant and equipment** | 13.a | **44629499** | **45591777** | **46380348** | **47357040** |
| &nbsp;&nbsp;&nbsp;**Intangible assets** | 14.a | **46456899** | **46795051** | **47620479** | **47968458** |
| **TOTAL ASSETS** |  | **127269565** | **124855996** | **130484952** | **128071708** |

---

 ****

Explanatory notes are an integral part of the quarterly information

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **INDIVIDUAL AND CONSOLIDATED INTERIM BALANCE SHEETS** | **INDIVIDUAL AND CONSOLIDATED INTERIM BALANCE SHEETS** |
| On March 31, 2026 and December 31, 2025 | On March 31, 2026 and December 31, 2025 |
| (In thousands of Reais) | |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | | **Company** | **Company** | **Consolidated** | **Consolidated** |
| **LIABILITIES AND EQUITY** | <br>**Note** | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| **Current liabilities** |  | **24894749** | **24082749** | **26054800** | **25246147** |
| &nbsp;&nbsp;&nbsp;Personnel, social charges and benefits | 15 | 945338 | 1171475 | 1103539 | 1346202 |
| &nbsp;&nbsp;&nbsp;Trade accounts payable | 16 | 9913335 | 9479701 | 10232441 | 9861294 |
| &nbsp;&nbsp;&nbsp;Income and social contribution taxes payable | 8.b | 214331 | 94989 | 227904 | 130866 |
| &nbsp;&nbsp;&nbsp;Taxes, charges and contributions payable | 17 | 1535160 | 1467678 | 1591560 | 1516170 |
| &nbsp;&nbsp;&nbsp;Dividends and interest on equity | 18.a | 3217986 | 2774544 | 3217986 | 2774544 |
| &nbsp;&nbsp;&nbsp;Provision and contingencies | 19.a | 1631812 | 1582565 | 1656926 | 1607456 |
| &nbsp;&nbsp;&nbsp;Financing, debentures and leases | 20.a | 5069026 | 5239087 | 5192605 | 5348864 |
| &nbsp;&nbsp;&nbsp;Deferred income | 21 | 739317 | 711283 | 1182081 | 1076293 |
| &nbsp;&nbsp;&nbsp;Derivative financial instruments | 31.a | 70990 | 52533 | 72190 | 53044 |
| &nbsp;&nbsp;&nbsp;Other liabilities | 22 | 1557454 | 1508894 | 1577568 | 1531414 |
| **Non-current liabilities** |  | **32874854** | **32051504** | **34653655** | **33822835** |
| &nbsp;&nbsp;&nbsp;Personnel, social charges and benefits | 15 | 45555 | 79953 | 78629 | 113173 |
| &nbsp;&nbsp;&nbsp;Income and social contribution taxes payable | 8.b | 230556 | 227612 | 264828 | 261439 |
| &nbsp;&nbsp;&nbsp;Taxes, charges and contributions payable | 17 | 7530788 | 6510998 | 7602323 | 6581236 |
| &nbsp;&nbsp;&nbsp;Deferred taxes | 8.c | 4184801 | 4180926 | 4226399 | 4226185 |
| &nbsp;&nbsp;&nbsp;Provision and contingencies | 19.a | 5519837 | 5445770 | 5699091 | 5623903 |
| &nbsp;&nbsp;&nbsp;Financing, debentures and leases | 20.a | 13377937 | 13705531 | 14677804 | 14997817 |
| &nbsp;&nbsp;&nbsp;Deferred income | 21 | 138006 | 125716 | 236834 | 226372 |
| &nbsp;&nbsp;&nbsp;Derivative financial instruments | 31.a | 59889 | 35428 | 70707 | 43859 |
| &nbsp;&nbsp;&nbsp;Other liabilities | 22 | 1787485 | 1739570 | 1797040 | 1748851 |
| **TOTAL LIABILITIES** |  | **57769603** | **56134253** | **60708455** | **59068982** |
| **Equity** |  | **69499962** | **68721743** | **69499962** | **68721743** |
| &nbsp;&nbsp;&nbsp;Capital | 23.a | 60071416 | 60071416 | 60071416 | 60071416 |
| &nbsp;&nbsp;&nbsp;Capital reserves | 23.c | (110078) | (110078) | (110078) | (110078) |
| &nbsp;&nbsp;&nbsp;Income reserves | 23.d | 8742734 | 8735352 | 8742734 | 8735352 |
| &nbsp;&nbsp;&nbsp;Retained earnings |  | 728701 |  | 728701 |  |
| &nbsp;&nbsp;&nbsp;Equity valuation adjustment | 23.f | 67189 | 25053 | 67189 | 25053 |
| **Non-controlling shareholders** | 23.g |  |  | 276535 | 280983 |
| **TOTAL EQUITY** |  | **69499962** | **68721743** | **69776497** | **69002726** |
| **TOTAL LIABILITIES AND EQUITY** |  | **127269565** | **124855996** | **130484952** | **128071708** |

---

 ****

The explanatory notes are an integral part of the quarterly information

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **INDIVIDUAL AND CONSOLIDATED STATEMENTS OF INCOME** | **INDIVIDUAL AND CONSOLIDATED STATEMENTS OF INCOME** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

 ****

 **INDIVIDUAL AND CONSOLIDATED STATEMENTS OF INCOME**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | <br>**Note** | **03.31.2026** | **03.31.2025** | **03.31.2026** | **03.31.2025** |
| **Net operating revenue** | 24 | **14701939** | **13759926** | **15457015** | **14390273** |
| &nbsp;&nbsp;&nbsp;&nbsp;Cost of sales and services | 25 | (7952444) | (7569186) | (8514512) | (8035882) |
| &nbsp;&nbsp;&nbsp;&nbsp;**Gross profit** |  | **6749495** | **6190740** | **6942503** | **6354391** |
| &nbsp;&nbsp;&nbsp;&nbsp;**Operating income (expenses)** |  | **(4475211)** | **(4221811)** | **(4618938)** | **(4369423)** |
| &nbsp;&nbsp;&nbsp;&nbsp;Selling expenses | 25 | (3545473) | (3313875) | (3591175) | (3378670) |
| &nbsp;&nbsp;&nbsp;&nbsp;General and administrative expenses | 25 | (939837) | (817669) | (1006769) | (871370) |
| &nbsp;&nbsp;&nbsp;&nbsp;Other operating income (expense), net | 26 | (18206) | (117894) | (19048) | (115679) |
| &nbsp;&nbsp;&nbsp;&nbsp;Share of results in investees – equity method | 12 | 28305 | 27627 | (1946) | (3704) |
| **Operating income** |  | **2274284** | **1968929** | **2323565** | **1984968** |
| &nbsp;&nbsp;&nbsp;&nbsp;Financial income (expense), net | 27 | (677657) | (563503) | (720475) | (569198) |
| **Profit before taxes** |  | **1596627** | **1405426** | **1603090** | **1415770** |
| &nbsp;&nbsp;&nbsp;&nbsp;Income and social contribution taxes | 8.d | (335544) | (347214) | (346539) | (359500) |
| **Net income for the period** |  | **1261083** | **1058212** | **1256551** | **1056270** |
| **Attributable to:** |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Controlling shareholders | 23.h | 1261083 | 1058212 | 1261083 | 1058212 |
| &nbsp;&nbsp;&nbsp;&nbsp; Non-controlling shareholders | 23.h |  |  | (4532) | (1942) |
| **Basic and diluted earnings per common share (in R$)** | 23.i | 0.39000 | 0.33000 |  |  |

---

 ****

Explanatory notes are an integral part of the quarterly information

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **INDIVIDUAL AND CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY** | **INDIVIDUAL AND CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

 ****

 **INDIVIDUAL AND CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY**

---

| | | | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | | **Capital reserves** | **Capital reserves** | **Capital reserves** | **Income reserves** | **Income reserves** | **Income reserves** | **Income reserves** | | | | | |
|  | <br>**Capital** | **Special goodwill reserve** | **Treasury shares** | **Other capital reserves** | **Legal reserve** | **Treasury shares** | **Tax incentive reserve** | **Reserve for remuneration of shareholders and investments** | <br>**Retained earnings** | <br>**Equity valuation adjustment** | <br>**Parent Company equity** | <br>**Non-controlling shareholders** | <br>**Consolidated equity** |
| &nbsp;&nbsp;**Balance on December 31, 2024** | **62071416** | **63074** | **(194)** | **215** | **4118419** | **(199999)** | **426933** | **3177863** | **—** | **71855** | **69729582** | **69913** | **69799495** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return of Capital to Shareholders - 17/02/25 | (2000000) |  |  |  |  |  |  |  |  |  | (2000000) |  | (2000000) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Appropriation to tax incentive reserve |  |  |  |  |  |  | 8582 |  | (8582) |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Repurchase of common shares for treasury |  |  |  |  |  | (326479) |  |  |  |  | (326479) |  | (326479) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Non-controlling shareholders in Vivo Ventures – adjustment |  |  |  |  |  |  |  |  |  |  |  | 330 | 330 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other comprehensive income |  |  |  |  |  |  |  |  |  | (5290) | (5290) |  | (5290) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net income for the period |  |  |  |  |  |  |  |  | 1058212 |  | 1058212 | (1942) | 1056270 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interim interest on equity distribution |  |  |  |  |  |  |  |  | (380000) |  | (380000) |  | (380000) |
| &nbsp;&nbsp;**Balance on March 31, 2025** | **60071416** | **63074** | **(194)** | **215** | **4118419** | **(526478)** | **435515** | **3177863** | **669630** | **66565** | **68076025** | **68301** | **68144326** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unclaimed dividends and interest on equity |  |  |  |  |  |  |  |  | 150553 |  | 150553 |  | 150553 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Appropriation to tax incentive reserve |  |  |  |  |  |  | (1023) |  | 1023 |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Repurchase of common shares for treasury |  |  |  |  |  | (1420001) |  |  |  |  | (1420001) |  | (1420001) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cancellation of common shares |  |  | 30 | (30) |  | 928892 |  | (928892) |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Non-controlling shareholders in Vivo Ventures – adjustment |  |  |  |  |  |  |  |  |  |  |  | 1503 | 1503 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Acquisition of equity stake in subsidiary - FiBrasil |  |  |  |  |  |  |  |  |  |  |  | 199695 | 199695 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Capital transaction for the acquisition of CyberCo Brasil by TIS. |  |  |  | (168729) |  |  |  |  |  |  | (168729) |  | (168729) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Capital transactions - share consolidation and stock split processes |  |  |  | (4444) |  |  |  |  |  |  | (4444) |  | (4444) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other comprehensive income |  |  |  |  |  |  |  |  | 10157 | (41512) | (31355) | (95) | (31450) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net income for the period |  |  |  |  |  |  |  |  | 5109694 |  | 5109694 | 11579 | 5121273 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Allocation of income: |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Legal reserve |  |  |  |  | 308395 |  |  |  | (308395) |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interim interest on equity distribution |  |  |  |  |  |  |  |  | (2990000) |  | (2990000) |  | (2990000) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reserve for remuneration of shareholders and investments |  |  |  |  |  |  |  | 2642662 | (2642662) |  |  |  |  |
| &nbsp;&nbsp;**Balance on December 31, 2025** | **60071416** | **63074** | **(164)** | **(172988)** | **4426814** | **(1017587)** | **434492** | **4891633** | **—** | **25053** | **68721743** | **280983** | **69002726** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Appropriation to tax incentive reserve |  |  |  |  |  |  | 7382 |  | (7382) |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Non-controlling shareholders in Vivo Ventures – adjustment |  |  |  |  |  |  |  |  |  |  |  | 84 | 84 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other comprehensive income |  |  |  |  |  |  |  |  |  | 42136 | 42136 |  | 42136 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net income for the period |  |  |  |  |  |  |  |  | 1261083 |  | 1261083 | (4532) | 1256551 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interim interest on equity distribution |  |  |  |  |  |  |  |  | (525000) |  | (525000) |  | (525000) |
| &nbsp;&nbsp;**Balance on March 31, 2026** | **60071416** | **63074** | **(164)** | **(172988)** | **4426814** | **(1017587)** | **441874** | **4891633** | **728701** | **67189** | **69499962** | **276535** | **69776497** |

---

Explanatory notes are an integral part of the quarterly information

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **INDIVIDUAL AND CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME** | **INDIVIDUAL AND CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais) | (In thousands of Reais) |

---

 **INDIVIDUAL AND CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME**

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **03.31.2025** | **03.31.2026** | **03.31.2025** |
| **Net income for the period** | **1261083** | **1058212** | **1256551** | **1056270** |
| **Other net comprehensive income that may be reclassified to income in subsequent years** | **42136** | **(5286)** | **42136** | **(5286)** |
| &nbsp;&nbsp;&nbsp;&nbsp;Gains (losses) on derivative financial instruments | 80527 | (323) | 80527 | (323) |
| &nbsp;&nbsp;&nbsp;&nbsp;Taxes | (27379) | 110 | (27379) | 110 |
| &nbsp;&nbsp;&nbsp;&nbsp;Currency translation adjustments for foreign investees | (11012) | (5073) | (11012) | (5073) |
| **Other net comprehensive income that will not be reclassified to income in subsequent periods** | **—** | **(4)** | **—** | **(4)** |
| &nbsp;&nbsp;&nbsp;&nbsp;Unrealized gains (losses) on financial assets at fair value through other comprehensive income |  | (6) |  | (6) |
| &nbsp;&nbsp;&nbsp;&nbsp;Taxes |  | 2 |  | 2 |
| **Other comprehensive income** | **42136** | **(5290)** | **42136** | **(5290)** |
| **Comprehensive income for the period – net of taxes** | **1303219** | **1052922** | **1298687** | **1050980** |
| **Attributable to:** |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Controlling shareholders | 1303219 | 1052922 | 1303219 | 1052922 |
| &nbsp;&nbsp;&nbsp;&nbsp;Non-controlling shareholders |  |  | (4532) | (1942) |

---

Explanatory notes are an integral part of the quarterly information

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **INDIVIDUAL AND CONSOLIDATED STATEMENTS OF VALUE ADDED** | **INDIVIDUAL AND CONSOLIDATED STATEMENTS OF VALUE ADDED** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais) | (In thousands of Reais) |

---

 **INDIVIDUAL AND CONSOLIDATED STATEMENTS OF VALUE ADDED**

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **03.31.2025** | **03.31.2026** | **03.31.2025** |
| **Revenue** | **17579281** | **16516152** | **18453339** | **17183666** |
| Sale of goods and services | 17598580 | 16500550 | 18497556 | 17211775 |
| Other revenues | 165124 | 145489 | 166660 | 143475 |
| Revenues related to the construction of own assets | 215382 | 212473 | 223737 | 212473 |
| Allowance for expected losses from accounts receivable | (399805) | (342360) | (434614) | (384057) |
| **Inputs acquired from third parties** | **(6253679)** | **(6127811)** | **(6826490)** | **(6581468)** |
| Cost of goods and products sold and services rendered | (4111358) | (4122122) | (4688256) | (4574642) |
| Materials, electric energy, third-party services and other expenses | (2218180) | (2014952) | (2214434) | (2022917) |
| Loss/recovery of assets | 75859 | 9263 | 76200 | 16091 |
| **Gross value added** | **11325602** | **10388341** | **11626849** | **10602198** |
| **Withholdings** | **(3800858)** | **(3706056)** | **(3883815)** | **(3714976)** |
| Depreciation and amortization | (3800858) | (3706056) | (3883815) | (3714976) |
| **Net value added produced** | **7524744** | **6682285** | **7743034** | **6887222** |
| **Value added received in transfer** | **451354** | **531065** | **476529** | **520445** |
| Share of results in investees – equity method | 28305 | 27627 | (1946) | (3704) |
| Financial income | 423049 | 503438 | 478475 | 524149 |
| **Total undistributed value added** | **7976098** | **7213350** | **8219563** | **7407667** |
| **Distribution of value added** | **7976098** | **7213350** | **8219563** | **7407667** |
| **Personnel, social charges and benefits** | **1588345** | **1568007** | **1732842** | **1675882** |
| Direct compensation | 933042 | 1045526 | 1029976 | 1117716 |
| Benefits | 560017 | 450122 | 599309 | 479198 |
| Government Severance Indemnity Fund for Employees (FGTS) | 95286 | 72359 | 103557 | 78968 |
| **Taxes, charges and contributions** | **3643110** | **3244539** | **3761153** | **3308690** |
| Federal | 1570730 | 1439803 | 1648910 | 1488876 |
| State | 1999869 | 1731837 | 2019041 | 1733233 |
| Local | 72511 | 72899 | 93202 | 86581 |
| **Debt remuneration** | **1483559** | **1342592** | **1469016** | **1366825** |
| Interest | 1072650 | 1049147 | 1167333 | 1073587 |
| Rental | 410909 | 293445 | 301683 | 293238 |
| **Equity remuneration** | **1261084** | **1058212** | **1256552** | **1056270** |
| Interest on equity distribution | 525000 | 380000 | 525000 | 380000 |
| Retained profit | 736084 | 678212 | 736084 | 678212 |
| Non-controlling shareholders |  |  | (4532) | (1942) |

---

Explanatory notes are an integral part of the quarterly information

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **INDIVIDUAL AND CONSOLIDATED STATEMENTS OF CASH FLOWS** | **INDIVIDUAL AND CONSOLIDATED STATEMENTS OF CASH FLOWS** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais) | (In thousands of Reais) |

---

 **INDIVIDUAL AND CONSOLIDATED STATEMENTS OF CASH FLOWS**

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **03.31.2025** | **03.31.2026** | **03.31.2025** |
| **<u>Cash flows from operating activities</u>** |  |  |  |  |
| **Income before taxes** | **1596627** | **1405426** | **1603090** | **1415770** |
| **Adjustment for:** |  |  |  |  |
| Depreciation and amortization | 3800858 | 3706056 | 3883815 | 3714976 |
| Accrued foreign exchange accruals on loans, financing and derivative instruments | 40917 | 33101 | 57566 | 40265 |
| Accrued interest and charges on assets and liabilities | 111636 | 128136 | 110158 | 128173 |
| Share of results in investees – equity method | (28305) | (27627) | 1946 | 3704 |
| Gains on disposal of assets | (139215) | (28145) | (139126) | (28003) |
| Impairment losses – trade accounts receivable | 399805 | 342360 | 434614 | 384057 |
| Change in liability provision | 218670 | 85318 | 240988 | 70950 |
| Pension plans and other post-retirement benefits | 10464 | 18540 | 10738 | 18779 |
| Provision for lawsuits | 168688 | 182304 | 168903 | 182220 |
| Accrued interest expenses (loans, financing, leases and other creditors) | 553824 | 566454 | 601038 | 576549 |
| Provisions (reversals) for fines for cancellation of lease and dismantling contracts | (6144) | 1610 | (6144) | 256 |
| Reversal of provisions for amounts to be refunded to customers |  | (90663) |  | (90663) |
| Other | 7892 | 65862 | 6099 | 60382 |
| **Changes in assets and liabilities** |  |  |  |  |
| Trade accounts receivable | (193896) | (447456) | (239259) | (508815) |
| Inventories | (280212) | (108480) | (284175) | (117107) |
| Taxes recoverable | (32676) | (122521) | (60876) | (112650) |
| Prepaid expenses | (710718) | (739724) | (725871) | (848681) |
| Other assets | (45298) | (42155) | (75945) | (48234) |
| Personnel, social charges and benefits | (260536) | (283061) | (277208) | (288578) |
| Trade accounts payable | 595330 | 721326 | 497960 | 762628 |
| Taxes, charges and contributions | 362756 | 622073 | 375334 | 590878 |
| Provisions for legal claims, refunds to customers and provision for fines for cancellation of lease contracts | (197060) | (202230) | (197731) | (203374) |
| Other liabilities | 121490 | 31091 | 193036 | 179504 |
|  | **4498270** | **4412169** | **4575860** | **4467216** |
| **Cash generated from operations** | **6094897** | **5817595** | **6178950** | **5882986** |
| Interest paid on loans, financing, debentures, leases and other creditors. | (619184) | (620220) | (627237) | (625210) |
| Income and social contribution taxes paid | (223147) | (153818) | (254331) | (166933) |
| **Net cash generated by operating activities** | **5252566** | **5043557** | **5297382** | **5090843** |
| **<u>Cash flows from investing activities</u>** |  |  |  |  |
| Additions to PP&E, intangible assets and others | (2368835) | (2417121) | (2412750) | (2421314) |
| Proceeds from sale of PP&E | 172327 | 52301 | 172327 | 52942 |
| Payments for acquisition of investments, net of cash acquired and capital contributions to invested companies | 5031 | (26851) | (5008) | (47244) |
| Receipts net of judicial deposits | 15313 | 22408 | 15240 | 22858 |
| Net redemptions (applications) of financial investments | (26446) | 8466 | (13006) | 8455 |
| Cash and cash equivalents received upon the acquisition of companies |  |  |  | 685 |
| **Net cash used in investing activities** | **(2202610)** | **(2360797)** | **(2243197)** | **(2383618)** |
| **<u>Cash flows from financing activities</u>** |  |  |  |  |
| New borrowings |  |  |  | 20000 |
| Loan payments, financing, debentures, leases and other creditors | (956649) | (865158) | (971279) | (869692) |
| Receipts – derivative financial instruments | 6447 | 12487 | 7094 | 13942 |
| Payments – derivative financial instruments | (42318) | (44830) | (58669) | (51173) |
| Payments for reverse stock split and stock split operations | (280) |  | (280) |  |
| Payment for acquisitions of shares for treasury |  | (326479) |  | (326479) |
| Dividend and interest on equity paid | (384) | (137) | (384) | (137) |
| Capital subscriptions made by non-controlling shareholders in subsidiaries |  |  | 84 | 330 |
| **Net cash used in financing activities** | **(993184)** | **(1224117)** | **(1023434)** | **(1213209)** |
| **Increase in cash and cash equivalents** | **2056772** | **1458643** | **2030751** | **1494016** |
| **Cash and cash equivalents at beginning of the period** | **6538941** | **6266376** | **7032339** | **6691098** |
| **Cash and cash equivalents at end of the period** | **8595713** | **7725019** | **9063090** | **8185114** |

---

Explanatory notes are an integral part of the quarterly information

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

 **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION**

1. OPERATIONS

**1. a. Background information**

Telefônica Brasil S.A. ("Company" or "Telefônica Brasil"), together with its subsidiaries ("Consolidated"), is a publicly traded company whose main activities are the operation of communications and telecommunications services; as well as the development of any and all activities necessary or ancillary to the execution of these services, including the leasing, sharing and assignment of infrastructure, and may also perform the following activities: (a) operation of value-added services, development, provision, distribution and marketing of digital services, as well as audio, video, image, text and application content over the internet in any medium, including advertising and publicity materials; and (b) operation of integrated solutions, management, provision of services and consulting related to: (i) data center, including hosting and colocation; (ii) storage, processing and management of data, information, texts, images, videos, applications and information systems and similar; (iii) connectivity, internet of things, information technology, networks, systems analysis and development, programming, configuration and similar; (iv) information and communication security; (v) communications and telecommunications; (vi) electronic security systems related to theft, intrusion, fire and others, surveillance, security, tracking and remote or non-remote monitoring; (vii) maintenance, repair, technical assistance and technical support in informatics and any machines and equipment; (viii) artificial intelligence and blockchain; and (ix) intelligence in data management (Big Data), among others.

The Company's principal offices are located at 1376, Engenheiro Luis Carlos Berrini Avenue, in the city and State of São Paulo, Brazil. It is a member of the Telefónica Group ("Group"), based in Spain which operates in several countries in Europe.

Telefónica S.A. ("Telefónica"), the Group holding company, held a total direct and indirect interest in the Company of 77.13% on March 31, 2026 and December 31, 2025 (Note 23.a).

The Company is registered with the Brazilian Securities Commission ("CVM") and its shares are traded on the B3 S.A. – Brasil, Bolsa e Balcão ("B3"). It is also registered with the U.S. Securities and Exchange Commission ("SEC") and its American Depositary Shares ("ADSs"), backed by its common shares, are traded on the New York Stock Exchange ("NYSE").

**1. b. Operations**

The Company renders the following services: (i) Fixed Switched Telephony Service ("STFC"); (ii) Multimedia Communication Service ("SCM", data communication, including broadband internet); (iii) Personal Mobile Service ("SMP"); and (iv) Conditioned Access Service ("SEAC" – Pay TV); (v) Private Limited Service ("SLP") and (vi) Global Mobile Satellite Service ("SMGS"), throughout Brazil, through authorizations, in addition to other activities.

Service authorizations are granted by Brazil's Telecommunications Regulatory Agency ("ANATEL"), the agency responsible for the regulation of the Brazilian telecommunications sector under the terms of Law No. 9472 of July 16, 1997 – General Telecommunications Law ("*Lei Geral das Telecomunicações*" – LGT).

The information regarding STFC and SMP services, and the authorizations for each sub-band held by the Company for use in SMP, detailed in Note 1.b. Operations, the financial statements for the year ended December 31, 2025.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

<u>Risks related to the telecommunications sector in Brazil and the Company</u>

The Company's business is subject to extensive regulation, including changes that may occur during the terms of the Company's contracts to provide telecommunications services in Brazil. ANATEL, the regulatory national body for the telecommunications sector, regulates, among other the: sector policies and regulations; licensing; fees and tariffs; competitive aspects, including the expansion of the Company'Business through the acquisition of other telecommunications companies; service, technical and quality standards; consumer rights; and penalties and other sanctions related to interconnection and agreements.

The regulatory framework for telecommunications in Brazil is constantly evolving. The interpretation and compliance with regulations, the assessment of compliance with standards, and the flexibility of regulatory authorizations can be subjective nature. The Company operates under authorizations granted by the Brazilian government, such authorizations are critical to the Company's success. However, due to the changing nature of the Brazilian regulatory framework, the Company cannot assure that ANATEL will not issue terms of authorizations and/or licenses which are not favorable to the Company's business. The Company's authorizations and licenses to operate, require the Company to meet specific goals and maintain a minimum level of quality, coverage, and service standards. Failure to meet these requirements may result in the imposition of fines, penalties, or other regulatory reactions, including the termination of authorizations to operate. A partial or total termination of any of the Company's authorizations or licenses to operate would have a substantially adverse effect on the business, its financial condition, revenues, operating results, and prospects.

In recent years, ANATEL has reviewed and introduced regulatory changes, especially stimulating competition and modifying interconnection fees charged between local telecommunications service providers. Competition measures are regularly used to seek an equilibrium in markets where one or more participants hold significantly greater market power over its competitors.

As stated in ANATEL's regulatory agenda for the 2023-2024 biennium, the revision of the General Competition Goals Plan ("PGMC"), approved by Resolution No. 600 of November 8, 2012, and updated by Resolution No. 694 of July 17, 2018, was submitted to Public Consultation in November 2023. This brings together, in a single regulatory instrument, a set of specific measures aimed at promoting competition introducing a framework for future reassessments of sectoral competition performance. This review, every four years, and begins from the publication of public consultation No. 64 of November 6, 2023, with emphasis on markets in the sector, asymmetric regulatory measures, and holders of Significant Market Power ("SMP"), as defined in the regulation.

Following approval by the ANATEL Board of Directors, the new PGMC was published by Resolution No. 783, of September 3, 2025, under a deadline set in ANATEL's regulatory agenda for the 2025-2026 biennium (discussed in Public Consultation No. 46, of September 11, 2024, and approved by ANATEL Internal Resolution No. 399/2024, of December 30, 2024), indicating final approval in the second half of 2025.

Also in November 2023, ANATEL submitted to public consultation the revision of the Spectrum Use Regulation ("RUE"), approved by Resolution No. 671, of November 3, 2016. The new wording proposed by ANATEL includes, among other changes, new regulations for granting authorizations for the use of a secondary spectrum on basis, in addition to changes in the procedures for evaluating the efficient use of the spectrum. by ANATEL. The expectation is that the new RUE will be published in the second half of 2026.

As to the acquisition of the UPI (Standard Interconnection Unit) of Oi Móvel S.A.'s mobile assets by the three largest operators in the Brazilian SMP market (Vivo, Claro and TIM) ("Operation"), approved by ANATEL and the Administrative Council for Economic Defense ("CADE"), it is noteworthy that the publication of the New PGMC concluded the regulatory remedies imposed as a result of the Operation, as well as the CADE's monitoring period for compliance with the remedies.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

The impositions from the Operation were extinguished for the MVNO and as the spectrum sharing market, as ANATEL did not indicate any market failures and competition problems that justified them. For National Roaming, which remained a relevant market (as it was also before the Operation), price controls were maintained through a Bottom-Up LRIC+ Cost Model.

In the overall context described above, the adoption of disproportionately asymmetrical measures and the prospect of ANATEL adopting concepts, prices, and remuneration models that could impact the remuneration and cost scenario could substantially harm the Company's business, financial condition, revenues, operating results, and prospects.

The interconnection tariffs, form the basis of the Company's revenue and costs and are charged between telecommunications service providers to allow and remunerate the interconnected use of their networks. Changes to the regulations over interconnection tariffs may reduce tariff revenues or costs or charge affecting the Company's business, financial condition, revenues, operating results, and prospects.

The Company is also at risk from changes in rules and regulations aimed at preserving the rights of consumers of telecommunications services. In this regard, it should be added that ANATEL published, in November 2023, the new General Regulation of Consumer Rights ("RGC"), through Resolution No. 765/2023, which came into force on September 1, 2025, replacing Resolution No. 632/2014. This new Regulation affects telecommunications services offered, in addition to updating customer service procedures.

Therefore, the Company's business, operating results, revenues and financial conditions could be negatively affected the regulatory authorities, including, new or more stringent operational and/or service requirements; granting of operating licenses; limitations on interconnection tariffs; sanctions for failures to comply with regulatory obligations; delays in granting, or lack of approvals for tariff increases; and antitrust limitations imposed by ANATEL and CADE.

The Company may also not be unsuccessful in being awarded new tenders by ANATEL for the acquisition of new radio frequency usage authorizations. The ANATEL Board of Directors, through Ruling No. 148/2024, instructed that the ANATEL Superintendencies to publish, by December 31, 2025, a new tender notice for the 700 MHz sub-band. The tender notice was approved by the Federal Court of Accounts and published by ANATEL in February 2026. ANATEL Resolution No. 785/2025, approved a plan for issuing tenders for radio frequency usage authorizations, over time scales through to 2036.

**1. c. Reform of taxes on consumption**

On December 20, 2023, Constitutional Amendment ("EC") No. 132 was enacted, establishing the Tax Reform ("Reform") on consumption. Complementary Law No. 214/2025 ("LC") was sanctioned by the President of the Republic on January 16, 2025 and, on January 13, 2026, LC No. 227/2026 was approved, which, among other topics, creates the IBS management committee, to regulates tax litigation, and establishes rules for the administration of the new taxes.

The Reform model is based on a split VAT ("dual VAT") model: under federal jurisdiction (Contribution on Goods and Services - CBS) and non federal jurisdiction (Tax on Goods and Services - IBS), which will replace the PIS, COFINS, ICMS, and ISS taxes. A Selective Tax ("IS") under federal jurisdiction was also created, which will apply to the production, extraction, marketing, or importation of goods and services that are harmful to health and the environment, according to the LC (Complementary Law), but not to telecommunications services. There will be a transition period from 2026 to 2032, during which the two tax systems (old and new) will coexist.

During 2026, invoices will display a proforma charge for CBS (0.9%) and IBS (0.1%) for information purposes only. Consequently, there will be no financial impact. The Company is preparing its systems to issue and receive tax documents displaying the IBS and CBS. Only from January 2027 will the new taxes begin to affect the Company.

It is worth noting that the impacts of the Tax Reform will only be fully known after the other stages of legal and infra-legal regulation, which may include the enactment of new ordinary laws (federal, state and municipal), decrees, normative instructions and technical notes.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

The Reform on has not affected the individual and consolidated Quarterly Information ("ITRs") for the period ending March 31, 2026.

2. BASIS OF PREPARATION AND PRESENTATION OF INDIVIDUAL AND CONSOLIDATED QUARTERLY FINANCIAL INFORMATION

**2. a. Statement of compliance**

The individual (Parent Company) and consolidated (Consolidated) quarterly information ("ITRs") were prepared and are being presented in accordance with Technical Pronouncement CPC 21 - Interim Statements, issued by the Accounting Pronouncements Committee ("CPC") and with international standards IAS 34 – Interim Financial Reporting, issued by the International Accounting Standards Board ("IASB"), the "IFRS accounting standards" (IFRS® Accounting Standards), including interpretations issued by the IFRS Interpretations Committee (IFRIC® Interpretations) or its predecessor, Standing Interpretations Committee (SIC® Interpretations) and in a manner consistent with the deliberations issued by the CVM, applicable to the preparation of ITRs.

The Company also considered the guidelines set forth in Technical Guidance OCPC 07, issued by the CPC in November 2014, when preparing the ITRs and disclosures are limited to all matters of significance to the financial statements, which is consistent with the information utilized by Management in the performance of its duties.

**2. b. Basis of preparation and presentation**

The individual and consolidated ITRs were prepared under the historical cost convention, other than for certain assets and liabilities which are measured at fair value.

The Company prepared its financial statements based on the assumption of operational continuity.

An asset is classified as current when it meets any of the following criteria: (a) it is expected to be realized, or is intended to be sold or consumed, in the normal course of the entity's operating cycle; (b) it is held primarily for the purpose of being traded; (c) it is expected to be realized within twelve months after the balance sheet date; or (d) it is cash or a cash equivalent, unless its exchange or use to settle a liability is prohibited for at least twelve months after the balance sheet date.

A liability is classified as current when it meets any of the following criteria: (a) it is expected to be settled during the entity's normal operating cycle; (b) it is held primarily for the purpose of being traded; (c) it is expected to be settled within twelve months after the balance sheet date; or (d) the entity does not have the right, at the balance sheet date, to defer settlement of the liability for at least twelve months after that date.

Deferred tax assets and liabilities are all classified as non-current.

The Statements of Cash Flows were prepared pursuant to IAS 7 / CPC 03 to reflect the changes in cash that occurred in the periods presented, using the indirect method.

The accounting standards adopted in Brazil require the presentation of the Statement of Value Added ("DVA"), both individual and consolidated; IFRS standards do not require such presentation. The DVA was prepared in accordance with technical pronouncement CPC 09 and is being presented as supplementary information for IFRS purposes.

These ITRs compare the quarters ended March 31, 2026 and 2025, except for the balance sheets, which compare the positions as of March 31, 2026 with December 31, 2025.

The Company's ITRs were approved by the Board of Directors at a meeting held on May 7, 2026.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

 **2. c. Functional and reporting currency**

The individual and consolidated financial statements are presented in thousands of Brazilian Real/Reais (R$) (unless otherwise mentioned). The Company's functional and presentation currency is the Real.

Transactions in foreign currency are converted into Brazilian Reais as follows: (i) assets, liabilities and equity (except share capital and capital reserves) are converted at the closing exchange rate on the balance sheet date; (ii) expenses and revenues are converted at the average exchange rate, except for specific operations that are converted at the rate on the date of the transaction; and (iii) share capital and capital reserves are converted at the rate on the date of the transaction.

Gains and losses from the conversion of investees abroad are recognized in the statement of comprehensive income as cumulative translations adjustments. Gains and losses resulting from the conversion of monetary assets and liabilities between the exchange rate in force on the date of the transaction and the end of the years (except the conversion of investments abroad) are recognized in the statement of income.

**2. d. Basis of consolidation**

Equity interests in subsidiaries or jointly controlled companies are valued using the equity method in the individual parent company quarterly information. In the consolidated quarterly information, the investment and all balances of assets and liabilities, income and expenses arising from transactions and equity interest in subsidiaries are eliminated in full. Investments in jointly controlled companies are reported under the equity method in the consolidated quarterly information.

The information relating to direct and jointly controlled subsidiaries is the same as that in Note 12. Investments, disclosed in the financial statements for the year ended December 31, 2025.

Information on the investees is presented in Note 12.

**2. e. Segment reporting**

Operating segments are defined as components of an enterprise for which separate financial information is available which is assessed on a regular basis by the chief operating decision maker in determining how to allocate resources to an individual segment and in assessing the segment's performance. Considering that: (i) all decisions are made based on consolidated reports; (ii) the mission of the Company and its subsidiaries is to provide its customers with quality telecommunications services; and (iii) all decisions relating to strategic, financial planning, purchasing, investments and application of resources are made on a consolidated basis, Management's conclusion is that the Company and its subsidiaries operate in a single operating segment providing services telecommunications.

**2. f. Significant accounting practices**

The information in the explanatory notes that did not undergo significant changes compared to and as disclosed at December 31, 2025 was not repeated in these ITRs.

The material accounting policies adopted in preparing the Company's Interim Financial Statements for the quarter ended March 31, 2026, are consistent with those used in preparing the consolidated financial statements for the year ended December 31, 2025, and should be analyzed in conjunction with those financial statements, except for the Changes in the Classification and Measurement of Financial Instruments – Amendments to IFRS 9 and IFRS 7 (equivalent to CPC 48 and CPC 40, respectively) and Annual Enhancements to International Accounting Standards (IFRS Accounting Standards) – Volume 11, both effective for annual periods beginning on or after January 1, 2026. These changes and enhancements did not impact the Company's Interim Financial Statements.

The Company did not early adopt new accounting standards or interpretations unless mandatory.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

 **2. g. Significant accounting judgments estimates and assumptions**

The preparation of individual and consolidated ITRs requires the use of certain critical accounting estimates and the exercise of judgment by the Company's Management in applying its accounting policies. These estimates are based on experience, information available at the balance sheet date and other factors, including expectations of future events that are believed to be reasonable in the circumstances. The settlement of transactions involving these estimates may result in values that differ from those recorded in the ITRs due to the criteria inherent to the estimation process. The Company reviews its estimates at least annually.

The significant and relevant estimates and judgments applied by the Company in the preparation of these ITRs have not changed in relation to those presented in the following explanatory notes as presented in the financial statements for the year ended December 31, 2025: Corporate events of 2025 (Business Combination); accounts receivable; Income tax and social contribution; PP&E; intangibles; provisions and contingencies; loans and financing, debentures, leases and other creditors; pension plans and other post-employment benefits; and financial instruments and capital and risk management.

3. CASH AND CASH EQUIVALENTS

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| Short-term investments<sup>(1)</sup> | 8541557 | 6460418 | 9000221 | 6945770 |
| Cash and banks<sup>(2)</sup> | 54156 | 78523 | 62869 | 86569 |
| **Total** | **8595713** | **6538941** | **9063090** | **7032339** |

---

(1) Highly liquid short-term investments basically Bank Deposit Certificates ("CDB") and Repurchase
Agreements with top tier financial institutions, linked to the Interbank Deposit Certificate ("CDI") rate, with original maturities
of up to three months, and with immaterial risk of change in value. Income from these investments is recorded as financial income. On
March 31, 2026, the average remuneration for these short-term investments was 99.94% of the CDI (100.04% on December 31, 2025).

(2) On March 31, 2026 and December 31, 2025, the Consolidated balances included R$9,082 and R$16,694, respectively,
related to the Financial Clearing House, with a member company of the Telefónica Group (Note 28)

4. FINANCIAL INVESTMENTS

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| Guarantee deposits for legal proceedings<sup>(1)</sup> | 32972 | 40934 | 33394 | 41308 |
| Treasury Bills - LFT<sup>(2)</sup> |  |  | 88748 | 99102 |
| Sudene tax incentives<sup>(3)</sup> | 34407 |  | 34407 |  |
| **Total non-current** | **67379** | **40934** | **156549** | **140410** |
| Current |  |  | 88748 | 99102 |
| Non-current | 67379 | 40934 | 67801 | 41308 |

---

(1) These refer to financial investments in guarantees for legal proceedings (notes 19 and 33).

(2) They refer to financial investments in Treasury Financial Bills ("LFT"), made by the subsidiaries Vivo Pay I Fundo de Investimentos em Direitos Creditórios and Vivo Pay Sociedade de Crédito Direto S.A.. These are financial assets measured at fair value through profit or loss.

(3) They refer to reinvestment in tax incentives on operating profits in the region covered by the Superintendency for the Development of the Northeast ("Sudene").

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

5. TRADE ACCOUNTS RECEIVABLE

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| Services and goods<sup>(1)</sup> | 11723657 | 11818593 | 12209173 | 12250210 |
| Interconnection balances<sup>(1) (2)</sup> | 571597 | 597809 | 576746 | 634221 |
| Vivo Pay FIDC |  |  | 368333 | 348848 |
| Related parties (Note 28)<sup>(1)</sup> | 53631 | 68865 | 36058 | 50292 |
| **Gross accounts receivable** | **12348885** | **12485267** | **13190310** | **13283571** |
| Allowance for expected losses | (2244630) | (2160878) | (2496772) | (2380452) |
| **Net accounts receivable** | **10104255** | **10324389** | **10693538** | **10903119** |
| Current | 9755215 | 10082818 | 10302438 | 10619617 |
| Non-current | 349040 | 241571 | 391100 | 283502 |

---

(1) The consolidated amounts include: (i) R$3,157,928 and R$3,024,347 to be billed to customers on March 31,
2026 and December 31, 2025, respectively. It also includes the amounts of contractual assets.

(2) Refer to billed amounts from other telecommunications operators.

The consolidated non-current balances of accounts receivable refer to the present value of: (i) installments for resale of goods (B2B), up to 24 months; (ii) Vivo Tech products, up to 60 months; and (iii) right to Vivo Money FIDC credits, up to 36 months. These may be reduced by estimated expected losses.

The consolidated balances of contractual assets with customers were R$140,838 and R$136,473 on March 31, 2026 and December 31, 2025, respectively.

On March 31, 2026, and December 31, 2025, no customer represented more than 10% of trade accounts receivable, net.

Amounts receivable, net of the allowance for expected losses, classified by maturity, are as below:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| Not yet due | 8181712 | 8492065 | 8948780 | 9252301 |
| Overdue – 1 to 30 days | 1231971 | 1197527 | 1168094 | 1070093 |
| Overdue – 31 to 60 days | 289162 | 285086 | 209341 | 266390 |
| Overdue – 61 to 90 days | 136387 | 135921 | 136008 | 127779 |
| Overdue – 91 to 120 days | 121092 | 69705 | 99858 | 63929 |
| Overdue – over 120 days | 143931 | 144085 | 131457 | 122627 |
| **Total** | **10104255** | **10324389** | **10693538** | **10903119** |

---

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

The changes in the allowance for expected losses from accounts receivable were:

---

| | | |
|:---|:---|:---|
|  | **Company** | **Consolidated** |
| **Balance on December 31, 2024** | **(2023711)** | **(2215251)** |
| Supplement to estimated losses, net of reversal (Note 25) | (342360) | (384057) |
| Write-off | 300492 | 357751 |
| **Business combination - Samauma** |  | (508) |
| **Balance on March 31, 2025** | **(2065579)** | **(2242065)** |
| Supplement to estimated losses, net of reversal | (1085340) | (1197280) |
| Write-off | 990041 | 1060040 |
| Business combination - Samauma |  | (278) |
| Business combination - FiBrasil |  | (869) |
| **Balance on December 31, 2025** | **(2160878)** | **(2380452)** |
| Supplement to estimated losses, net of reversal (Note 25) | (399805) | (434614) |
| Write-off | 316053 | 318294 |
| **Balance on March 31, 2026** | **(2244630)** | **(2496772)** |

---

6. INVENTORIES

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| Materials for resale<sup>(1)</sup> | 1762540 | 1442313 | 1828219 | 1505519 |
| Materials for consumption | 21134 | 20797 | 31515 | 28986 |
| Other inventories | 14214 | 59814 | 16595 | 62890 |
| **Gross inventories** | **1797888** | **1522924** | **1876329** | **1597395** |
| Estimated losses from impairment or obsolescence<sup>(2)</sup> | (116661) | (118052) | (119958) | (121397) |
| **Net inventories** | **1681227** | **1404872** | **1756371** | **1475998** |

---

(1) This includes, among others, mobile phones, SIMcards (chips) and IT equipment in stock.

(2) Additions and reversals of the provision for inventory losses and obsolescence are included in Cost of
sales (Note 25).

7. PREPAID EXPENSES

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| Incremental costs (customers' contracts)<sup>(1)</sup> | 3472110 | 3356376 | 3472110 | 3356376 |
| Fistel Fees (TFF, Condecine and EBC)<sup>(2)</sup> | 1040812 |  | 1040812 |  |
| Software licenses and network maintenance | 557239 | 379140 | 1093106 | 893514 |
| Advertising and publicity | 173469 | 176989 | 173469 | 176989 |
| Personnel | 112416 | 153043 | 115733 | 157750 |
| Financial charges | 204314 | 177199 | 204314 | 177199 |
| Rent, taxes, insurance, and other upfront expenses. | 99171 | 63057 | 179842 | 148677 |
| **Total** | **5659531** | **4305804** | **6279386** | **4910505** |
| Current | 3097025 | 1891448 | 3636621 | 2414780 |
| Non-current | 2562506 | 2414356 | 2642765 | 2495725 |

---

(1) Incremental costs for contracts with customers are mostly sales commissions paid to business partners
to obtain customer contracts, deferred as income under IFRS 15 in accordance with the term of the contract and/or economic benefit to
be generated, usually two to six years.

(2) Refers to the remaining balance of fees for (i) Inspection and Operating; (ii) Contribution for the Development
of the National Film Industry ("Condecine") and; (iii) Brazilian Communications Company ("EBC") for the year,
which will be fully amortized by the end of 2026.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

8. INCOME AND SOCIAL CONTRIBUTION TAXES

**8. a. Income and Social Contribution taxes recoverable**

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| Income taxes | 315151 | 313919 | 330095 | 331342 |
| Social contribution taxes | 21512 | 21252 | 25274 | 24944 |
| **Total** | **336663** | **335171** | **355369** | **356286** |

---

**8. b. Income and Social Contribution taxes payable**

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| Income taxes | 343234 | 239911 | 389055 | 301699 |
| Social contribution taxes | 101653 | 82690 | 103677 | 90606 |
| **Total** | **444887** | **322601** | **492732** | **392305** |
| Current | 214331 | 94989 | 227904 | 130866 |
| Non-current | 230556 | 227612 | 264828 | 261439 |

---

At March 31, 2026 and December 31, 2025 includes R$272,613 and R$269,158, respectively, of taxes provisioned per IFRIC 23 (Note 8.e).

**8. c. Deferred taxes**

Below, is the composition and changes in the main components of deferred income tax ("IR") and social contribution ("CS").

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** |
| | **Balance on 12.31.2024** | **Statement of income** | **Comprehensive income** | **Balance on 03.31.2025** | **Statement of income** | **Comprehensive income** | **Balance on 12.31.2025** |
| <br>**Deferred tax assets (liabilities)** |  |  |  |  |  |  |  |
| **Income and social contribution taxes on tax carryforward losses<sup>(1)</sup>** | **1632896** | **(116937)** | **—** | **1515959** | **(260284)** | **—** | **1255675** |
| **Income and social contribution taxes on temporary differences<sup>(2)</sup>** | **(5636159)** | **34507** | **112** | **(5601540)** | **110249** | **54690** | **(5436601)** |
| Provision for legal, labor, tax civil and regulatory contingencies | 2037940 | (8476) |  | 2029464 | 56120 |  | 2085584 |
| Trade accounts payable and other provision | 2345098 | 138799 |  | 2483897 | 422537 |  | 2906434 |
| Customer portfolio and trademarks | (163541) | 6348 |  | (157193) | 21202 |  | (135991) |
| Allowance for expected losses from accounts receivable | 612793 | 10227 |  | 623020 | 54280 |  | 677300 |
| Estimated losses from modems and other P&E items | 114779 | (266) |  | 114513 | (1200) |  | 113313 |
| Pension plans and other post-employment benefits | 244307 | 2737 |  | 247044 | (66623) | 30277 | 210698 |
| Profit sharing | 204355 | (107637) |  | 96718 | 118049 |  | 214767 |
| Licenses | (2208640) | 39440 |  | (2169200) | 118320 |  | (2050880) |
| Goodwill (Spanish and Navytree, Vivo Part., GVT Part. and Garliava) | (7663800) | (57710) |  | (7721510) | (173130) |  | (7894640) |
| Property, plant and equipment - small value items | (1247037) | 34564 |  | (1212473) | (22089) |  | (1234562) |
| Technological Innovation Law | (5718) | 378 |  | (5340) | 1044 |  | (4296) |
| Other temporary differences | 93305 | (23897) | 112 | 69520 | (418261) | 24413 | (324328) |
| **Total deferred tax liabilities, non-current** | **(4003263)** | **(82430)** | **112** | **(4085581)** | **(150035)** | **54690** | **(4180926)** |
| **Deferred tax assets** | **8784066** |  |  | **8704683** |  |  | **9177424** |
| **Deferred tax liabilities** | **(12787329)** |  |  | **(12790264)** |  |  | **(13358350)** |
| **Deferred tax liabilities, net** | **(4003263)** |  |  | **(4085581)** |  |  | **(4180926)** |
| **Presented in the balance sheet as follows:** |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;**Deferred tax liabilities** | **(4003263)** |  |  | **(4085581)** |  |  | **(4180926)** |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Company** | **Company** | **Company** | **Company** |
| | **Balance on 12.31.2025** | **Comprehensive income** | **Comprehensive income** | **Balance on 03.31.2026** |
| <br>**Deferred tax assets (liabilities)** |  |  |  |  |
| **Income and social contribution taxes on tax carryforward losses<sup>(1)</sup>** | **1255675** | **(159905)** | **—** | **1095770** |
| **Income and social contribution taxes on temporary differences<sup>(2)</sup>** | **(5436601)** | **183409** | **(27379)** | **(5280571)** |
| Provision for legal, labor, tax civil and regulatory contingencies | 2085584 | 47770 |  | 2133354 |
| Trade accounts payable and other provision | 2906434 | 204123 |  | 3110557 |
| Customer portfolio and trademarks | (135991) | 7157 |  | (128834) |
| Allowance for expected losses from accounts receivable | 677300 | 27848 |  | 705148 |
| Estimated losses from modems and other P&E items | 113313 | 3930 |  | 117243 |
| Pension plans and other post-employment benefits | 210698 | 61550 |  | 272248 |
| Profit sharing | 214767 | (102048) |  | 112719 |
| Licenses | (2050880) | 39440 |  | (2011440) |
| Goodwill (Spanish and Navytree, Vivo Part., GVT Part. and Garliava) | (7894640) | (57710) |  | (7952350) |
| Property, plant and equipment - small value items | (1234562) | (3505) |  | (1238067) |
| Technological Innovation Law | (4296) | 337 |  | (3959) |
| Other temporary differences | (324328) | (45483) | (27379) | (397190) |
| **Total deferred tax liabilities, non-current** | **(4180926)** | **23504** | **(27379)** | **(4184801)** |
| **Deferred tax assets** | 9177424 |  |  | 9264173 |
| **Deferred tax liabilities** | (13358350) |  |  | (13448974) |
| **Deferred tax liabilities, net** | **(4180926)** |  |  | **(4184801)** |
| **Presented in the balance sheet as follows:** |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;**Deferred tax liabilities** | **(4180926)** |  |  | **(4184801)** |

---

 ****

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

---

| | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** |
| | **Balance on 12.31.2024** | **Statement of income** | **Comprehensive income** | **Samauma - Business Combination** | **Balance on 03.31.2025** | **Statement of income** | **Comprehensive income** | **Samauma Business Combination** | &nbsp;&nbsp;**FiBrasil Business Combination** | **Cyber Business Combination** | **Balance on 12.31.2025** |
| <br>**Deferred tax assets (liabilities)** |  |  |  |  |  |  |  |  |  |  |  |
| **Income and social contribution taxes on tax carryforward losses<sup>(1)</sup>** | **1720781** | **(116123)** | **—** | **—** | **1604658** | **(246626)** | **—** | **—** | **79694** | **—** | **1437726** |
| **Income and social contribution taxes on temporary differences<sup>(2)</sup>** | **(5578243)** | **30659** | **112** | **(2979)** | **(5550451)** | **161677** | **54542** | **(556)** | **(18495)** | **3656** | **(5349627)** |
| Provision for legal, labor, tax civil and regulatory contingencies | 2088350 | (6222) |  | 805 | 2082933 | 55865 |  | 32 | 8702 |  | 2147532 |
| Trade accounts payable and other provision | 2361206 | 144241 |  |  | 2505447 | 462495 |  |  | 2454 | 369 | 2970765 |
| Customer portfolio and trademarks | (144199) | (11711) |  |  | (155910) | 25816 |  |  |  |  | (130094) |
| Allowance for expected losses from accounts receivable | 619881 | 11034 |  |  | 630915 | 65269 |  |  | 296 |  | 696480 |
| Estimated losses from modems and other P&E items | 114779 | (266) |  |  | 114513 | (1200) |  |  |  |  | 113313 |
| Pension plans and other post-employment benefits | 245299 | 2758 |  |  | 248057 | (67055) | 30138 |  |  |  | 211140 |
| Profit sharing | 209830 | (110683) |  |  | 99147 | 120920 |  |  | 4477 | 2222 | 226766 |
| Licenses | (2208640) | 39440 |  |  | (2169200) | 118320 |  |  |  |  | (2050880) |
| Goodwill (Spanish and Navytree, Vivo Part., GVT Part., Garliava and Vita IT) | (7678224) | (56899) |  |  | (7735123) | (154762) |  |  | (16856) |  | (7906741) |
| Property, plant and equipment - small value items | (1247038) | 34564 |  |  | (1212474) | (22089) |  |  |  |  | (1234563) |
| Technological Innovation Law | (5718) | 378 |  |  | (5340) | 1044 |  |  |  |  | (4296) |
| Other temporary differences | 66231 | (15975) | 112 | (3784) | 46584 | (442946) | 24404 | (588) | (17568) | 1065 | (389049) |
| **Total deferred tax (Liabilities), non-current** | **(3857462)** | **(85464)** | **112** | **(2979)** | **(3945793)** | **(84949)** | **54542** | **(556)** | **61199** | **3656** | **(3911901)** |
| **Deferred tax assets** | **8947536** |  |  |  | **8898344** |  |  |  |  |  | **9593230** |
| **Deferred tax liabilities** | **(12804998)** |  |  |  | **(12844137)** |  |  |  |  |  | **(13505131)** |
| **Deferred tax liabilities, net** | **(3857462)** |  |  |  | **(3945793)** |  |  |  |  |  | **(3911901)** |
| **Presented in the balance sheet as follows:** |  |  |  |  |  |  |  |  |  |  |  |
| **Deferred tax assets of subsidiaries** | **158215** |  |  |  | **150582** |  |  |  |  |  | **314284** |
| **Deferred tax liabilities** | **(4015677)** |  |  |  | **(4096375)** |  |  |  |  |  | **(4226185)** |

---

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** |
| | **Balance on 12.31.2025** | **Statement of income** | **Comprehensive income** | **Balance on 03.31.2026** |
| <br>**Deferred tax assets (liabilities)** |  |  |  |  |
| **Income and social contribution taxes on tax carryforward losses<sup>(1)</sup>** | **1437726** | **(153597)** | **—** | **1284129** |
| **Income and social contribution taxes on temporary differences<sup>(2)</sup>** | **(5349627)** | **176495** | **(27379)** | **(5200511)** |
| Provision for legal, labor, tax civil and regulatory contingencies | 2147532 | 37293 |  | 2184825 |
| Trade accounts payable and other provision | 2970765 | 191901 |  | 3162666 |
| Customer portfolio and trademarks | (130094) | 6548 |  | (123546) |
| Allowance for expected losses from accounts receivable | 696480 | 31568 |  | 728048 |
| Estimated losses from modems and other P&E items | 113313 | 3930 |  | 117243 |
| Pension plans and other post-employment benefits | 211140 | 61999 |  | 273139 |
| Profit sharing | 226766 | (108571) |  | 118195 |
| Licenses | (2050880) | 39440 |  | (2011440) |
| Goodwill (Spanish and Navytree, Vivo Part., GVT Part., Garliava and Vita IT) | (7906741) | (73122) |  | (7979863) |
| Property, plant and equipment - small value items | (1234563) | (3505) |  | (1238068) |
| Technological Innovation Law | (4296) | 337 |  | (3959) |
| Other temporary differences | (389049) | (11323) |  | (427751) |
| **Total deferred tax liabilities, non-current** | **(3911901)** | **22898** | **(27379)** | **(3916382)** |
| **Deferred tax assets** | **9593230** |  |  | **9712704** |
| **Deferred tax liabilities** | **(13505131)** |  |  | **(13629086)** |
| **Deferred tax liabilities, net** | **(3911901)** |  |  | **(3916382)** |
| **Presented in the balance sheet as follows:** |  |  |  |  |
| **Deferred tax assets of subsidiaries** | **314284** |  |  | **310017** |
| **Deferred tax liabilities** | **(4226185)** |  |  | **(4226399)** |

---

(1) Under Brazilian tax legislation offsets are limited annually to 30% of the taxable income for the year
but otherwise have no expiry dates.

(2) Amounts that will be realized upon payment of provision, losses from accounts receivable, or upon realization
of inventories, as well as upon reversal of other provision.

On March 31, 2026 and December 31, 2025, unrecognized deferred tax assets for tax carryforward losses of the Company's subsidiaries (POP, TLF05 (previously Recicla V), TGLog and Fibrasil), totalled R$33,720 and R$19,039 on March 31, 2026 and December 31, 2025, respectively, deferred tax assets were not recognized because sufficient projected taxable profits can not be assured for offset.

**8. d. Reconciliation of statutory tax rate to effective tax rate**

The Company and its subsidiaries recognize income and social contribution taxes on an accrual basis, and pay taxes based on estimates, recorded in a tax auxiliary ledger. Taxes calculated on profits at the balance sheet date are recorded in liabilities or assets, as applicable.

A reconciliation from the statutory tax rate of 34% (income tax of 25% and social contribution tax of 9%) for the three month periods ended March 31, 2026 and 2025 is as follows:

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** |
|  | **03.31.2026** | **03.31.2025** | **03.31.2026** | **03.31.2025** |
| Income before taxes | 1596627 | 1405426 | 1603090 | 1415770 |
| Income and social contribution tax expenses, at the statutory tax rate of 34% | (542853) | (477845) | (545051) | (481362) |
| <u>Permanent differences</u> |  |  |  |  |
| Tax benefit related to interest on equity distribution | 178500 | 129200 | 178500 | 129200 |
| Non-deductible expenses, gifts, incentives | (8286) | (24423) | (9608) | (24820) |
| Tax incentive operating profit | 7383 | 9087 | 7383 | 9087 |
| Share of results in investees – equity method | 9624 | 9393 | (662) | (1259) |
| Other exclusions, net | 20088 | 7374 | 22899 | 9654 |
| **Tax expense** | **(335544)** | **(347214)** | **(346539)** | **(359500)** |
| Effective rate | 21.0% | 24.7% | 21.6% | 25.4% |
| Current income and social contribution taxes | (359048) | (264784) | (369437) | (274036) |
| Deferred income and social contribution taxes | 23504 | (82430) | 22898 | (85464) |

---

**8. e. Uncertain Tax Treatments**

The Company and its subsidiaries are contesting several assessments filed by the Brazilian Federal Tax Authority ("RFB") for alleged incorrect deductions of expenses, mainly related to the amortization of goodwill, at various administrative and judicial levels, totaling R$42,093,060 and R$40,297,796 on March 31, 2026 and December 31, 2025, respectively. Management, under the advice of its legal advisors, believes that a large part of these deductions will likely be accepted once examined by the higher courts of last resort (acceptance probability greater than 50%). These amounts accrue SELIC interest.

When the Company and its subsidiaries believe that the probability of loss is greater than 50%, a non-current income tax and social contribution liability is recognized. The amount recognized was R$272,613 and R$269,158 on March 31, 2026 and December 31, 2025, respectively. These claims involve compensation for overpayment of income tax and social contribution awaiting approval by the RFB.

**8. f. Adaptation to new OECD Pillar II rules**

On December 27, 2024 Law 15,079/24 was enacted, introducing an additional Social Contribution on Net Income ("CSLL") charge to adapt Brazilian legislation to the Global Rules Against Base Erosion, OECD model ("Pillar II"). The Law determines that if a Company presents an effective combined rate of Income Tax and Social Contribution on Net Income of less than 15%, it must make an tax payment until this minimum percentage is satisfied. This rule became effective as of January 2025; if an additional payment is necessary, the amount will be collected in the following year. The Company does not expect a significant impact as its effective rates exceed the stipulated minimum rate.

<u>Transfer Pricing Rules – Alignment with OECD Standards</u>

On December 28, 2022, Law No. 14,596/2023 was published, later regulated by RFB Normative Instruction No. 2,161/2023, which established the new Brazilian Transfer Pricing regime, aligned with OECD guidelines. The new rules became mandatory as of January 1, 2024, and are designed to as sure that intercompany transactions are carried out on an arm's length basis.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

The Company is currently in the process of preparing the analysis for the corresponding fiscal year, including a sensitivity study, supporting documentation, and a review of applicable methods, as provided for in current legislation. Although the technical process is still under development, the Company does not expect significant impacts from the adoption of the new transfer pricing regime, given the nature of the transactions carried out and the history of compliance with international standards.

The Company will continue to monitor these regulations and assure its financial statements are updated based on any adjustments identified upon completion of the formal transfer pricing analysis.

9. TAXES, CHARGES AND CONTRIBUTIONS RECOVERABLE

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| State VAT (ICMS)<sup>(1)</sup> | 2280022 | 2296378 | 2301722 | 2321798 |
| PIS and COFINS | 510817 | 513950 | 573835 | 558973 |
| Withholding taxes and contributions<sup>(2)</sup> | 321197 | 288156 | 378180 | 334941 |
| Other taxes | 91797 | 87447 | 96854 | 90806 |
| **Total** | **3203833** | **3185931** | **3350591** | **3306518** |
| Current | 2571428 | 2571664 | 2714969 | 2687600 |
| Non-current | 632405 | 614267 | 635622 | 618918 |

---

(1) Includes ICMS credits from the acquisition of property and equipment (available for offset in 48 months);
requests for refund of ICMS paid on invoices that were subsequently cancelled; for the rendering of services; tax substitution; and tax
rate difference; among others. Non-current consolidated amounts include credits arising from the acquisition of property and equipment
of R$583,712 and R$568,579 on March 31, 2026 and December 31, 2025, respectively.

(2) Withholding income tax ("IRRF") credits on short-term investments, interest on equity and others,
which are used as deduction in operations for the period and social contribution tax withheld at source on services provided to public
agencies.

10. JUDICIAL DEPOSITS AND GARNISHMENTS

Judicial deposits are made, and restrictions placed on bank balances to ensure the continuity of legal processes through the courts or to suspend the enforceability of the tax credit.

Judicial deposits are recorded at historical cost plus accrued interest.

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| Judicial deposits |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Tax | 1522465 | 1499788 | 1729342 | 1703327 |
| &nbsp;&nbsp;&nbsp;Civil | 954591 | 928308 | 956181 | 929909 |
| &nbsp;&nbsp;&nbsp;Regulatory | 248762 | 267596 | 248762 | 267596 |
| &nbsp;&nbsp;&nbsp;Labor | 36563 | 39113 | 41031 | 43683 |
| **Total** | **2762381** | **2734805** | **2975316** | **2944515** |
| Garnishments | 19588 | 18896 | 20617 | 19803 |
| **Total** | **2781969** | **2753701** | **2995933** | **2964318** |
| Current | 117347 | 106279 | 120097 | 107565 |
| Non-current | 2664622 | 2647422 | 2875836 | 2856753 |

---

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

The judicial deposits, classified by type of tax, on March 31, 2026 and December 31, 2025 are presented below. Further details relating to judicial deposits are presented in Note 10. Judicial Deposits and Garnishments, in the financial statements for the year ended December 31, 2025.

---

| | | |
|:---|:---|:---|
| | **Consolidated** | **Consolidated** |
| <br>**Tax** | **03.31.2026** | **12.31.2025** |
| Universal Telecommunication Services Fund (FUST) | 665218 | 656567 |
| State Value-Added Tax (ICMS) | 419764 | 411581 |
| Social Contribution Tax for Intervention in the Economic Order (CIDE) | 359893 | 355555 |
| Corporate Income Tax (IRPJ) and Social Contribution Tax (CSLL) | 66236 | 65358 |
| Telecommunications Inspection Fund (FISTEL) | 59710 | 58912 |
| Contribution tax on gross revenue for Social Integration Program (PIS) and for Social Security Financing (COFINS) | 30644 | 30225 |
| Withholding Income Tax (IRRF) | 6839 | 6720 |
| Social Security, work accident insurance (SAT) and funds to third parties (INSS) | 30059 | 29537 |
| Other taxes, charges and contributions | 90979 | 88872 |
| **Total** | **1729342** | **1703327** |

---

11. OTHER ASSETS

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| Related-party receivables (Note 28) | 161906 | 159245 | 30398 | 26471 |
| Sale of real estate and other receivables | 426855 | 473091 | 426855 | 473091 |
| Advances to employees and suppliers | 148993 | 49781 | 173116 | 55522 |
| Surplus from post-employment benefit plans (Note 30)<sup>(1)</sup> | 159646 | 182835 | 159718 | 182907 |
| Loan agreement with subsidiary CloudCo Brasil - 2024 | 45061 | 46830 |  |  |
| Indemnification assets (IPNET, VSS and Samauma acquisitions) |  |  | 143663 | 141610 |
| Assets held for sale <sup>(2)</sup> | 8979 | 8761 | 8979 | 8761 |
| Sublease of assets and other amounts receivable | 24809 | 13196 | 33889 | 16866 |
| **Total** | **976249** | **933739** | **976618** | **905228** |
| Current | 508466 | 447115 | 501822 | 419300 |
| Non-current | 467783 | 486624 | 474796 | 485928 |

---

(1) On March 31, 2026 and December 31, 2025, includes R$156,183 and R$179,493, respectively, referring to
the distribution of the PBS-A

(2) Assets classified as available for sale in their current condition, in the process of formalizing the
purchase and sale agreement. Depreciation on these properties ceased as of the date of reclassification.

12. INVESTMENTS

**12. a. Information on investees**

The information relating to direct and jointly controlled subsidiaries is the same as in Note 12) Investments, disclosed in the financial statements for the year ended December 31, 2025.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

Selected financial data of the direct and jointly controlled subsidiaries in which the Company has an interest is presented below:

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| | | | **03.31.2026** | **03.31.2026** | **03.31.2026** | **Three-month period ended March 31, 2026** | **Three-month period ended March 31, 2026** |
| <br>**Investees** | <br>**Participation** | <br>**Investment** | **Assets** | **Liabilities** | **Equity** | **Net operating revenue** | **Net profit (loss)** |
| Terra Networks <sup>(1)</sup> | 100.00% | Subsidiary | 1510057 | 909302 | 600755 | 296359 | 24912 |
| TGLog | 100.00% | Subsidiary | 44828 | 31732 | 13096 | 13935 | 367 |
| POP <sup>(2)</sup> | 100.00% | Subsidiary | 201428 | 83176 | 118252 | 13058 | 7908 |
| Vivo Pay I | 100.00% | Subsidiary | 241229 | 69121 | 172108 | 35345 | 9522 |
| Vivo Pay III | 100.00% | Subsidiary | 2030 | 39 | 1991 | 41 | 8 |
| Vivo Pay Holding <sup>(3)</sup> | 100.00% | Subsidiary | 33880 | 4762 | 29118 | 1053 | (2470) |
| Vivo Ventures | 98.00% | Subsidiary | 253776 | 922 | 252854 |  | (982) |
| FiBrasil <sup>(4)</sup> | 75.01% | Subsidiary | 2046928 | 1236249 | 810679 | 107400 | (1935) |
| CloudCo Brasil | 50.01% | Subsidiary | 1322187 | 1176339 | 145848 | 572547 | (4507) |
| Aliança | 50.00% | Joint control | 281093 | 735 | 280358 |  | 1668 |
| AIX | 50.00% | Joint control | 52535 | 35385 | 17150 | 12026 | (4705) |
| ACT | 50.00% | Joint control | 48 | 6 | 42 | 26 | (1) |
| GUD | 50.00% | Joint control | 40059 | 15079 | 24980 | 9127 | (854) |

---

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| | | | **12.31.2025** | **12.31.2025** | **12.31.2025** | **Three-month period ended March 31, 2025** | **Three-month period ended March 31, 2025** |
| <br>**Investees** | <br>**Participation** | <br>**Investment** | **Assets** | **Liabilities** | **Equity** | **Net operating revenue** | **Net profit (loss)** |
| Terra Networks <sup>(1)</sup> | 100.00% | Subsidiary | 1487924 | 912081 | 575843 | 186707 | 21275 |
| TGLog | 100.00% | Subsidiary | 46504 | 33775 | 12729 | 10830 | 214 |
| POP <sup>(2)</sup> | 100.00% | Subsidiary | 193031 | 82687 | 110344 | 10660 | 4802 |
| Vivo Pay I | 100.00% | Subsidiary | 251422 | 78836 | 172586 | 41903 | 2695 |
| Vivo Pay II | 100.00% | Subsidiary |  |  |  | 278 | (205) |
| Vivo Pay III | 100.00% | Subsidiary | 2010 | 27 | 1983 |  |  |
| Vivo Pay Holding <sup>(3)</sup> | 100.00% | Subsidiary | 35333 | 3745 | 31588 |  | (1110) |
| FiBrasil <sup>(4)</sup> | 75,01% / 25,01% | Subsidiary (Dec-25) Joint control ((Mar-25) | 2024474 | 1211861 | 812613 | 101869 | (8567) |
| CloudCo Brasil <sup>(5)</sup> | 50.01% | Subsidiary | 1306016 | 1155661 | 150355 | 410617 | (6252) |
| IoTCo Brasil <sup>(6)</sup> | 50.01% | Subsidiary |  |  |  | 26507 | 2133 |
| Vivo Ventures <sup>(7)</sup> | 98.00% | Subsidiary | 250880 | 1238 | 249642 |  | 5837 |
| Aliança | 50.00% | Joint control | 301512 | 798 | 300714 |  | 1365 |
| AIX | 50.00% | Joint control | 60180 | 38325 | 21855 | 17724 | (42) |
| ACT | 50.00% | Joint control | 49 | 6 | 43 | 26 | 1 |
| VIVAE <sup>(7)</sup> | 50.00% | Joint control |  |  |  | 1871 | (504) |
| GUD | 50.00% | Joint control | 37864 | 13748 | 24116 | 865 | (3945) |

---

(1) A wholly and directly controlling shareholder of TIS, TLF01, and Samauma. TIS has been the controlling
shareholder of CyberCo Brasil since December 9, 2025.

(2) A wholly and directly controlling shareholder of TLF05 Empreendimentos e Participações Ltda
(formerly Recicla V Comércio e Reciclagem de Sucatas e Metais Ltda) and Vale Saúde Gestão e Soluções
Ltda (formerly Vale Saúde Sempre.Administradora de Cartões Ltda).

(3) A wholly and directly controlling shareholder of Vivo Pay SCD.

(4) Became a subsidiary of the Company on November 12, 2025.

(5) Was the wholly and directly controlling shareholder of IPNET and IPNET USA. On July 1, 2025, and November
1, 2025, it incorporated merged IoTCo Brasil and IPNET, respectively.

(6) Merged by CloudCo Brasil on July 1, 2025.

(7) A corporate reorganization with Vivo Ventures on October 6, 2025, resulting in the transfer of the investment
in VivaE to Vivo Ventures.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

 **12. b. Changes in investment balances**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Subsidiary** | **Joint Venture** | **Business combination** | **Other investments** | **Company Total investments** | **Total investments** |
| **Balance on December 31, 2024** | **889844** | **430577** | **—** | **26** | **1320447** | **566384** |
| &nbsp;&nbsp;&nbsp;&nbsp;Equity interest (Statements of Income) | 31331 | (3704) |  |  | 27627 | (3704) |
| &nbsp;&nbsp;&nbsp;&nbsp;Dividends (Terra Networks) | (23800) |  |  |  | (23800) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Capital contribution - cash and cash equivalents (Vivo Ventures and GUD) | 16177 | 10674 |  |  | 26851 | 10674 |
| &nbsp;&nbsp;&nbsp;&nbsp;Investments in the subsidiary Vivo Ventures |  |  |  |  |  | 21651 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other comprehensive results |  | (5073) |  | (6) | (5079) | (5079) |
| **Balance on March 31, 2025** | **913552** | **432474** | **—** | **20** | **1346046** | **589926** |
| &nbsp;&nbsp;&nbsp;&nbsp;Equity income by results | 139926 | (14523) |  |  | 125403 | (14523) |
| &nbsp;&nbsp;&nbsp;&nbsp;Capital contribution - cash and cash equivalents (VivaE e GUD) | 328040 | 4249 |  |  | 332289 | 4249 |
| &nbsp;&nbsp;&nbsp;&nbsp;Capital transaction for the acquisition of CyberCo Brasil by TIS | (168729) |  |  |  | (168729) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Corporate reorganization of Vivo Ventures and VivaE - Investment in Vivo Ventures | 11222 | (11222) |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Corporate reorganization of Vivo Ventures and VivaE - Gain on the remeasurement of equity interest |  | 6153 |  |  | 6153 | 6153 |
| &nbsp;&nbsp;&nbsp;&nbsp;Acquisition of controlling interest in FiBrasil | 599084 | (372251) | 631169 |  | 858002 | (372251) |
| &nbsp;&nbsp;&nbsp;&nbsp;Gain on the remeasurement of the equity interest in the acquisition of control of FiBrasil |  | 128750 |  |  | 128750 | 128750 |
| &nbsp;&nbsp;&nbsp;&nbsp;Investments by subsidiary Vivo Ventures |  |  |  |  |  | 72707 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other comprehensive income | (1740) | 5886 |  | (20) | 4126 | 5866 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other | (106) |  |  |  | (106) |  |
| **Balance on December 31, 2025** | **1821249** | **179516** | **631169** | **—** | **2631934** | **420877** |
| &nbsp;&nbsp;&nbsp;&nbsp;Equity interest (Statements of Income) | 35580 | (1946) | (5329) |  | 28305 | (1946) |
| &nbsp;&nbsp;&nbsp;&nbsp;Capital contribution - cash and cash equivalents (Vivo Ventures and GUD) and redemption of shares in Vivo Pay I | (5890) | 859 |  |  | (5031) | 859 |
| &nbsp;&nbsp;&nbsp;&nbsp;Investments the subsidiary Vivo Ventures |  |  |  |  |  | 4521 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other comprehensive results |  | (11012) |  |  | (11012) | (11012) |
| **Balance on March 31, 2026** | **1850939** | **167417** | **625840** | **—** | **2644196** | **413299** |

---

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

13. PROPERTY, PLANT AND EQUIPMENT (PP&E)

**13. a. Changes in balances**

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** |
|  | **Switching and transmission equipment** | **Infrastructure** | **Lending equipment** | **Terminal equipment** | **Land** | **Other P&E** | **Assets and facilities under construction** | **Total** |
| **Balance on December 31, 2024** | **22759541** | **15989969** | **5504187** | **212327** | **239265** | **462287** | **1628442** | **46796018** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions | 37349 | 448000 | 22131 | 582 |  | 44740 | 1211468 | 1764270 |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs, net<sup>(1)</sup> | (958) | (55921) | (17) |  |  | (6321) | (3066) | (66283) |
| &nbsp;&nbsp;&nbsp;&nbsp;Net transfers | 1025223 | 132948 | 300179 | 3017 |  | 506 | (1461873) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Subletting |  | (16964) |  |  |  |  |  | (16964) |
| &nbsp;&nbsp;&nbsp;&nbsp;Depreciation (Note 25) | (1096423) | (997391) | (548121) | (45502) |  | (45083) |  | (2732520) |
| **Balance on March 31, 2025** | **22724732** | **15500641** | **5278359** | **170424** | **239265** | **456129** | **1374971** | **45744521** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions | 103015 | 3136346 | 60334 | (48) |  | 121239 | 4856574 | 8277460 |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs, net<sup>(1)</sup> | (1853) | (159224) |  |  | (643) | (1756) | (8055) | (171531) |
| &nbsp;&nbsp;&nbsp;&nbsp;Net transfers<sup>(2)</sup> | 2211296 | 414208 | 1658456 | 15421 |  | (54602) | (4246075) | (1296) |
| &nbsp;&nbsp;&nbsp;&nbsp;Subletting |  | (39530) |  |  |  |  |  | (39530) |
| &nbsp;&nbsp;&nbsp;&nbsp;Assets held for sale (Note 11) |  | (7399) |  |  | (1362) |  |  | (8761) |
| &nbsp;&nbsp;&nbsp;&nbsp;Depreciation | (3338226) | (3069634) | (1657822) | (67539) |  | (75865) |  | (8209086) |
| **Balance on December 31, 2025** | **21698964** | **15775408** | **5339327** | **118258** | **237260** | **445145** | **1977415** | **45591777** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions | 4346 | 547039 | 31824 |  |  | 17291 | 1249166 | 1849666 |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs, net<sup>(1)</sup> | (1258) | (25810) |  |  |  | (187) | (7555) | (34810) |
| &nbsp;&nbsp;&nbsp;&nbsp;Net transfers | 1635147 | (41329) | 392495 | 30260 |  | 8435 | (2025008) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Subletting |  | (2261) |  |  |  |  |  | (2261) |
| &nbsp;&nbsp;&nbsp;&nbsp;Assets held for sale (Note 11) |  | (232) |  |  |  | 14 |  | (218) |
| &nbsp;&nbsp;&nbsp;&nbsp;Depreciation (Note 25) | (1107254) | (1038944) | (570710) | (15879) |  | (41868) |  | (2774655) |
| **Balance on March 31, 2026** | **22229945** | **15213871** | **5192936** | **132639** | **237260** | **428830** | **1194018** | **44629499** |
| **Balance on December 31, 2025** |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Cost | 94841291 | 50078389 | 32920602 | 6585077 | 237260 | 5882621 | 1977415 | 192522655 |
| &nbsp;&nbsp;&nbsp;&nbsp;Accumulated depreciation | (73142327) | (34302981) | (27581275) | (6466819) |  | (5437476) |  | (146930878) |
| **Total** | **21698964** | **15775408** | **5339327** | **118258** | **237260** | **445145** | **1977415** | **45591777** |
| **Balance on March 31, 2026** |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Cost | 96726750 | 50154130 | 33338142 | 6614767 | 237260 | 5805370 | 1194018 | 194070437 |
| &nbsp;&nbsp;&nbsp;&nbsp;Accumulated depreciation | (74496805) | (34940259) | (28145206) | (6482128) |  | (5376540) |  | (149440938) |
| **Total** | **22229945** | **15213871** | **5192936** | **132639** | **237260** | **428830** | **1194018** | **44629499** |

---

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** |
|  | **Switching and transmission equipment** | **Infrastructure** | **Lending equipment** | **Terminal equipment** | **Land** | **Other P&E** | **Assets and facilities under construction** | **Total** |
| **Balance on December 31, 2024** | **22770806** | **15990041** | **5510213** | **212486** | **239265** | **453959** | **1635611** | **46812381** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions | 36624 | 448889 | 22131 | 592 |  | 45972 | 1209330 | 1763538 |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs, net <sup>(1)</sup> | (958) | (56699) | (17) |  |  | (6321) | (3066) | (67061) |
| &nbsp;&nbsp;&nbsp;&nbsp;Net transfers | 1025223 | 132947 | 300179 | 3017 |  | 506 | (1461872) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Subletting |  | (16964) |  |  |  |  |  | (16964) |
| &nbsp;&nbsp;&nbsp;&nbsp;Business combination - Samauma |  |  |  |  |  | 217 |  | 217 |
| &nbsp;&nbsp;&nbsp;&nbsp;Depreciation (Note 25) | (1096989) | (997287) | (548121) | (45514) |  | (47740) |  | (2735651) |
| **Balance on March 31, 2025** | **22734706** | **15500927** | **5284385** | **170581** | **239265** | **446593** | **1380003** | **45756460** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions | 103532 | 3187322 | 68210 | (2) |  | 125581 | 4860406 | 8345049 |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs, net <sup>(1)</sup> | (1852) | (161162) |  |  | (643) | (429) | (8506) | (172592) |
| &nbsp;&nbsp;&nbsp;&nbsp;Net transfers <sup>(2)</sup> | 2210588 | 414207 | 1661805 | 14595 |  | (54258) | (4248235) | (1298) |
| &nbsp;&nbsp;&nbsp;&nbsp;Subletting |  | 12091 |  |  |  |  |  | 12091 |
| Assets held for sale (Note 11) |  | (7399) |  |  | (1362) |  |  | (8761) |
| Business combination - FiBrasil |  | 1563540 |  |  | 818 | 1061 | 114083 | 1679502 |
| Business combination - Cyber | 2800 | 505 |  |  |  | 990 | 860 | 5155 |
| &nbsp;&nbsp;&nbsp;&nbsp;Depreciation | (3340249) | (3107821) | (1658307) | (67570) |  | (84619) |  | (8258566) |
| **Balance on December 31, 2025** | **21709525** | **17402210** | **5356093** | **117604** | **238078** | **434919** | **2098611** | **47357040** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions | 5039 | 600950 | 33225 |  |  | 16977 | 1247236 | 1903427 |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs, net <sup>(1)</sup> | (1260) | (25832) |  |  |  | (187) | (7881) | (35160) |
| &nbsp;&nbsp;&nbsp;&nbsp;Net transfers <sup>(2)</sup> | 1635155 | (41329) | 392495 | 30260 |  | 8435 | (2025816) | (800) |
| &nbsp;&nbsp;&nbsp;&nbsp;Assets held for sale (Note 11) |  | (232) |  |  |  | 14 |  | (218) |
| &nbsp;&nbsp;&nbsp;&nbsp;Depreciation (Note 25) | (1108500) | (1102398) | (570709) | (16966) |  | (45368) |  | (2843941) |
| **Balance on March 31, 2026** | **22239959** | **16833369** | **5211104** | **130898** | **238078** | **414790** | **1312150** | **46380348** |
| **Balance on December 31, 2025** |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Cost | 94868938 | 52291576 | 32937369 | 6585887 | 238078 | 6078455 | 2098611 | 195098914 |
| &nbsp;&nbsp;&nbsp;&nbsp;Accumulated depreciation | (73159413) | (34889366) | (27581276) | (6468283) |  | (5643536) |  | (147741874) |
| **Total** | **21709525** | **17402210** | **5356093** | **117604** | **238078** | **434919** | **2098611** | **47357040** |
| **Balance on March 31, 2026** |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Cost | 96755096 | 52423463 | 33356310 | 6615577 | 238078 | 6000891 | 1312150 | 196701565 |
| &nbsp;&nbsp;&nbsp;&nbsp;Accumulated depreciation | (74515137) | (35590094) | (28145206) | (6484679) |  | (5586101) |  | (150321217) |
| **Total** | **22239959** | **16833369** | **5211104** | **130898** | **238078** | **414790** | **1312150** | **46380348** |

---

(1) Infrastructure includes R$25,808 and R$213,077 in 2026 and 2025, respectively, referring to the cancellation
of lease agreements (Note 13.c)

(2) Total balances refer to transfers between classes of fixed and intangible assets (Note 14.a).

**13. b. Annual depreciation rates**

The annual depreciation rates are presented below (lease assets rates presented in Note 13.c).

---

| | | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** |
| **Description** | **03.31.2026** | **03.31.2026** | **03.31.2026** | **12.31.2025** | **12.31.2025** | **12.31.2025** | **03.31.2026** | **03.31.2026** | **03.31.2026** | **12.31.2025** | **12.31.2025** | **12.31.2025** |
| Switching and transmission equipment and media | 2.50% | to | 66.67% | 2.50% | to | 66.67% | 2.50% | to | 66.67% | 2.50% | to | 66.67% |
| Infrastructure | 2.50% | to | 20.00% | 2.50% | to | 20.00% | 2.50% | to | 50.00% | 2.50% | to | 50.00% |
| Leased equipment (cell phones and modems) | 20.00% | to | 50.00% | 20.00% | to | 50.00% | 20.00% | to | 50.00% | 20.00% | to | 50.00% |
| Terminal equipment | 10.00% | to | 25.00% | 10.00% | to | 25.00% | 10.00% | to | 50.00% | 10.00% | to | 50.00% |
| Other P&E assets | 10.00% | to | 25.00% | 10.00% | to | 25.00% | 10.00% | to | 25.00% | 10.00% | to | 25.00% |

---

**13. c. Additional information on leases**

Changes in the consolidated balances of leases, included above (Note 13.a), were:

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Infrastructure** | **Switching and transmission equipment** | **Other** | **Total** |
| **Balance on December 31, 2024** | **12989228** | **253131** | **5259** | **13247618** |
| &nbsp;&nbsp;&nbsp;Additions | 439493 | 35233 | 35862 | 510588 |
| &nbsp;&nbsp;&nbsp;Subletting (Note 13.a) | (16964) |  |  | (16964) |
| &nbsp;&nbsp;&nbsp;Depreciation | (883432) | (25283) | (4739) | (913454) |
| &nbsp;&nbsp;&nbsp;Cancellation of contracts | (55318) | (840) |  | (56158) |
| **Balance on March 31, 2025** | **12473007** | **262241** | **36382** | **12771630** |
| &nbsp;&nbsp;&nbsp;Additions | 3068882 | 93024 | 27643 | 3189549 |
| &nbsp;&nbsp;&nbsp;Subletting (Note 13.a) | 12091 |  |  | 12091 |
| &nbsp;&nbsp;&nbsp;Depreciation | (2731621) | (64569) | (13774) | (2809964) |
| &nbsp;&nbsp;&nbsp;Cancellation of contracts | (157759) | (210) |  | (157969) |
| &nbsp;&nbsp;&nbsp;Business combination - FiBrasil | 110330 |  |  | 110330 |
| &nbsp;&nbsp;&nbsp;Business combination - Cyber | 380 |  |  | 380 |
| **Balance on December 31, 2025** | **12775310** | **290486** | **50251** | **13116047** |
| &nbsp;&nbsp;&nbsp;Additions | 545358 | 1732 |  | 547090 |
| &nbsp;&nbsp;&nbsp;Depreciation | (938662) | (18958) | (4519) | (962139) |
| &nbsp;&nbsp;&nbsp;Cancellation of contracts | (25808) |  | (110) | (25918) |
| **Balance on March 31, 2026** | **12356198** | **273260** | **45622** | **12675080** |
| **Balance on December 31, 2025** |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Cost | 32014344 | 638473 | 193117 | 32845934 |
| &nbsp;&nbsp;&nbsp;Accumulated depreciation | (19239034) | (347987) | (142866) | (19729887) |
| **Total** | **12775310** | **290486** | **50251** | **13116047** |
| **Balance on March 31, 2026** |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Cost | 32469745 | 640205 | 192209 | 33302159 |
| &nbsp;&nbsp;&nbsp;Accumulated depreciation | (20113547) | (366945) | (146587) | (20627079) |
| **Total** | **12356198** | **273260** | **45622** | **12675080** |

---

Annual depreciation rates for leased assets:

---

| | | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** |
| <br>**Description** | **03.31.2026** | **03.31.2026** | **03.31.2026** | **12.31.2025** | **12.31.2025** | **12.31.2025** | **03.31.2026** | **03.31.2026** | **03.31.2026** | **12.31.2025** | **12.31.2025** | **12.31.2025** |
| Infrastructure | 2.36% | to | 92.31% | 2.36% | to | 92.31% | 2.36% | to | 92.31% | 2.36% | to | 92.31% |
| Switching and transmission equipment and media | 10.00% | to | 66.67% | 10.00% | to | 66.67% | 10.00% | to | 66.67% | 10.00% | to | 66.67% |
| Other P&E assets | 26.09% | to | 37.50% | 26.09% | to | 37.50% | 26.09% | to | 37.50% | 26.09% | to | 37.50% |

---

**13. d. Property, plant and equipment items pledged in guarantee**

On March 31, 2026 and December 31, 2025, consolidated PP&E offered as collateral in legal proceedings total R$9,402 and R$9,675, respectively.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

14. INTANGIBLE ASSETS

**14. a. Balances and changes**

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** |
|  | **Indefinite useful life** | **Finite useful life** | **Finite useful life** | **Finite useful life** | **Finite useful life** | **Finite useful life** | | |
|  | **Goodwill<sup>(1)</sup>** | **Licenses** | **Software** | **Trademarks** | **Customer portfolio** | **Other intangible assets** | <br>**Software under development** | <br>**Total** |
| **Balance on December 31, 2024** | **26262978** | **13595254** | **6568617** | **484179** | **85793** | **30736** | **826247** | **47853804** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions |  |  | 28 |  |  |  | 615595 | 615623 |
| &nbsp;&nbsp;&nbsp;&nbsp;Net transfers |  |  | 813327 |  |  |  | (813327) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Amortization (Note 25) |  | (329568) | (594859) | (21051) | (27406) | (652) |  | (973536) |
| **Balance on March 31, 2025** | **26262978** | **13265686** | **6787113** | **463128** | **58387** | **30084** | **628515** | **47495891** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions |  |  | 1883 |  |  |  | 2241857 | 2243740 |
| &nbsp;&nbsp;&nbsp;&nbsp;Net transfers<sup>(2)</sup> |  |  | 2081793 |  |  |  | (2080497) | 1296 |
| &nbsp;&nbsp;&nbsp;&nbsp;Amortization |  | (988708) | (1872776) | (63154) | (19285) | (1953) |  | (2945876) |
| **Balance on December 31, 2025** | **26262978** | **12276978** | **6998013** | **399974** | **39102** | **28131** | **789875** | **46795051** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions |  |  | 655 |  |  |  | 687476 | 688131 |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs, net |  |  | (80) |  |  |  |  | (80) |
| &nbsp;&nbsp;&nbsp;&nbsp;Net transfers |  |  | 853336 |  |  |  | (853336) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Amortization (Note 25) |  | (329569) | (671126) | (21051) | (3806) | (651) |  | (1026203) |
| **Balance on March 31, 2026** | **26262978** | **11947409** | **7180798** | **378923** | **35296** | **27480** | **624015** | **46456899** |
| **Balance on December 31, 2025** |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Cost | 26262978 | 29772875 | 33520865 | 1658897 | 4536912 | 269557 | 789875 | 96811959 |
| &nbsp;&nbsp;&nbsp;&nbsp;Accumulated amortization |  | (17495897) | (26522852) | (1258923) | (4497810) | (241426) |  | (50016908) |
| **Total** | **26262978** | **12276978** | **6998013** | **399974** | **39102** | **28131** | **789875** | **46795051** |
| **Balance on March 31, 2026** |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Cost | 26262978 | 29772875 | 34359150 | 1658897 | 4536912 | 269557 | 624015 | 97484384 |
| &nbsp;&nbsp;&nbsp;&nbsp;Accumulated amortization |  | (17825466) | (27178352) | (1279974) | (4501616) | (242077) |  | (51027485) |
| **Total** | **26262978** | **11947409** | **7180798** | **378923** | **35296** | **27480** | **624015** | **46456899** |

---

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** |
|  | **Indefinite useful life** | **Finite useful life** | **Finite useful life** | **Finite useful life** | **Finite useful life** | **Finite useful life** | | |
|  | **Goodwill<sup>(1)</sup>** | **Licenses** | **Software** | **Trademarks** | **Customer portfolio** | **Other intangible assets** | <br>**Software under development** | <br>**Total** |
| **Balance on December 31, 2024** | **26565135** | **13595254** | **6586840** | **496172** | **122126** | **68305** | **827815** | **48261647** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions |  |  | 28 |  |  |  | 615593 | 615621 |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs, net |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Net transfers |  |  | 813327 |  |  |  | (813327) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Business combination – Samauma | 59597 |  | 6 | 4222 |  | 9346 |  | 73171 |
| &nbsp;&nbsp;&nbsp;&nbsp;Amortization (Note 25) |  | (329568) | (596096) | (21836) | (29183) | (2642) |  | (979325) |
| **Balance on March 31, 2025** | **26624732** | **13265686** | **6804105** | **478558** | **92943** | **75009** | **630081** | **47971114** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions |  |  | 52157 |  |  |  | 2242037 | 2294194 |
| &nbsp;&nbsp;&nbsp;&nbsp;Net transfers<sup>(2)</sup> |  |  | 2082183 | (80) | (102) | (205) | (2080498) | 1298 |
| &nbsp;&nbsp;&nbsp;&nbsp;Business combination – Samauma | (21007) |  |  | 1238 |  | 11944 |  | (7825) |
| &nbsp;&nbsp;&nbsp;&nbsp;Business combination – IPNET | 1960 |  |  |  | (130) | (172) |  | 1658 |
| &nbsp;&nbsp;&nbsp;&nbsp;Business combination – FiBrasil | 631169 |  | 42203 | 445 | 3836 |  |  | 677653 |
| &nbsp;&nbsp;&nbsp;&nbsp;Business combination – Cyber |  |  | 1228 |  |  |  |  | 1228 |
| &nbsp;&nbsp;&nbsp;&nbsp;Amortization |  | (988708) | (1880714) | (66053) | (24587) | (10800) |  | (2970862) |
| **Balance on December 31, 2025** | **27236854** | **12276978** | **7101162** | **414108** | **71960** | **75776** | **791620** | **47968458** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions |  |  | 4120 |  |  |  | 687055 | 691175 |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs, net |  |  | (80) |  |  |  |  | (80) |
| &nbsp;&nbsp;&nbsp;&nbsp;Net transfers<sup>(2)</sup> |  |  | 854314 |  |  |  | (853514) | 800 |
| &nbsp;&nbsp;&nbsp;&nbsp;Amortization (Note 25) |  | (329569) | (679021) | (22024) | (5733) | (3527) |  | (1039874) |
| **Balance on March 31, 2026** | **27236854** | **11947409** | **7280495** | **392084** | **66227** | **72249** | **625161** | **47620479** |
| **Balance on December 31, 2025** |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Cost | 27236854 | 29772875 | 33811189 | 1679752 | 4583991 | 336367 | 791620 | 98212648 |
| &nbsp;&nbsp;&nbsp;&nbsp;Accumulated amortization |  | (17495897) | (26710027) | (1265644) | (4512031) | (260591) |  | (50244190) |
| **Total** | **27236854** | **12276978** | **7101162** | **414108** | **71960** | **75776** | **791620** | **47968458** |
| **Balance on March 31, 2026** |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Cost | 27236854 | 29772875 | 34653117 | 1679752 | 4583991 | 336367 | 625161 | 98888117 |
| &nbsp;&nbsp;&nbsp;&nbsp;Accumulated amortization |  | (17825466) | (27372622) | (1287668) | (4517764) | (264118) |  | (51267638) |
| **Total** | **27236854** | **11947409** | **7280495** | **392084** | **66227** | **72249** | **625161** | **47620479** |

---

(1) Refer to the operations of Santo Genovese Participações (2004); Spanish and Figueira (2006);
Telefônica Televisão Participações (2008); Vivo Participações (2011); GVT Participações
(2015), Garliava and Vita IT (2022), Vale Saúde (2023), IPNET (2024), Samauma and FiBrasil (2025).

(2) Refer to transfers between classes of fixed and intangible assets (Note 13.a).

**14. b. Annual amortization rates**

---

| | | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** |
| **Description** | **03.31.2026** | **03.31.2026** | **03.31.2026** | **12.31.2025** | **12.31.2025** | **12.31.2025** | **03.31.2026** | **03.31.2026** | **03.31.2026** | **12.31.2025** | **12.31.2025** | **12.31.2025** |
| Licenses | 3.60% | to | 24.00% | 3.60% | to | 24.00% | 3.60% | to | 24.00% | 3.60% | to | 24.00% |
| Software | 20.00% | 20.00% | 20.00% | 20.00% | 20.00% | 20.00% | 20.00% | 20.00% | 20.00% | 20.00% | 20.00% | 20.00% |
| Trademarks | 5.13% | 5.13% | 5.13% | 5.13% | 5.13% | 5.13% | 5.13% | to | 23.53% | 5.13% | to | 23.53% |
| Customer portfolio | 10.00% | to | 12.50% | 10.00% | to | 12.50% | 10.00% | to | 20.69% | 10.00% | to | 20.69% |
| Other intangible assets | 20.00% | 20.00% | 20.00% | 20.00% | 20.00% | 20.00% | 16.67% | to | 25.00% | 16.67% | to | 25.00% |

---

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

15. PERSONNEL, SOCIAL CHARGES AND BENEFITS

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| Social charges and benefits | 628923 | 568166 | 713748 | 645291 |
| Profit sharing | 183594 | 489023 | 197974 | 533219 |
| Share-based payment plans (Note 29) | 146950 | 151325 | 150559 | 154736 |
| Salaries and wages | 31426 | 42914 | 87656 | 94518 |
| Others |  |  | 32231 | 31611 |
| **Total** | **990893** | **1251428** | **1182168** | **1459375** |
| Current | 945338 | 1171475 | 1103539 | 1346202 |
| Non-current | 45555 | 79953 | 78629 | 113173 |

---

16. TRADE ACCOUNTS PAYABLE

The Company and/or its subsidiaries do not have financing agreements with suppliers.

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| Sundry suppliers (Opex, Capex, Services e Material) | 8769181 | 8354699 | 9423583 | 9020559 |
| Related parties (Note 28) | 646957 | 604018 | 311659 | 319751 |
| Amounts payable (operators, cobilling) | 293517 | 291670 | 293519 | 291670 |
| Interconnection / interlink | 203680 | 229314 | 203680 | 229314 |
| **Total** | **9913335** | **9479701** | **10232441** | **9861294** |

---

17. TAXES, CHARGES AND CONTRIBUTIONS PAYABLE

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| Fistel<sup>(1)</sup> | 7159933 | 6147772 | 7159933 | 6147772 |
| ICMS | 1385059 | 1332544 | 1473620 | 1417412 |
| PIS and COFINS | 219191 | 215904 | 242615 | 233775 |
| Fust and Funttel | 109175 | 106635 | 109175 | 106635 |
| Other taxes | 192590 | 175821 | 208540 | 191812 |
| **Total** | **9065948** | **7978676** | **9193883** | **8097406** |
| Current | 1535160 | 1467678 | 1591560 | 1516170 |
| Non-current | 7530788 | 6510998 | 7602323 | 6581236 |

---

(1) This refers to outstanding balances from 2020 to 2025 whose enforceability is suspended, according to
decisions of the Federal Regional Court of the First Region, and there is no prospect of the judgment being concluded in the short term.
The amount is classified as a non-current liability and is updated by the Selic rate.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

18. DIVIDENDS AND INTEREST ON EQUITY

Article 8 of Complementary Law No. 224, of December 26, 2025, amended item 2 of Article 9 of Law No. 9,249, of December 25, 1995, increasing the withholding income tax on JSCP (Interest on Equity) from 15% to 17.5% on the date of payment or credit to the beneficiary. This amendment is effective from January 1, 2026.

**18. a. Dividends and interest on equity payable**

*18.a.1. Balances*

---

| | | |
|:---|:---|:---|
|  | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** |
| Telefónica | 1180154 | 1002973 |
| Telefónica Latinoamérica Holding | 1132828 | 962667 |
| Telefónica Chile |  | 1481 |
| Non-controlling interest | 905004 | 807423 |
| **Total** | **3217986** | **2774544** |

---

*18.a.2. Changes in balances*

---

| | | |
|:---|:---|:---|
|  | **Consolidated** | **Consolidated** |
|  | **2026** | **2025** |
| **Balance at the beginning of the year** | **2774544** | **2237090** |
| Estimated JSCP (net of withholding tax) | 433125 | 323000 |
| Payment of dividends and interest on equity | (384) | (137) |
| Estimated withholding income tax on shareholders exempt from/immune from interest on equity. | 10701 | 3882 |
| **Balance on March 31** | **3217986** | **2563835** |
| Estimated JSCP (net of withholding tax) |  | 2541500 |
| Unclaimed dividends and interest on equity |  | (150553) |
| Payment of dividends and interest on equity |  | (2187265) |
| Estimated withholding income tax on shareholders exempt from/immune from interest on equity. |  | 7027 |
| **Balance at the end of the period** |  | **2774544** |

---

Interest on equity and dividends paid to shareholders are classified in "Financing Activities" in the statement of cash flows.

19. PROVISION AND CONTINGENCIES

The Company and its subsidiaries are party to administrative and judicial proceedings for labor, tax, regulatory and civil claims filed at different court levels. Management of the Company and its subsidiaries, under the advice of its legal counsel, recognized provision for legal proceedings when an unfavorable outcome is considered probable.

**19. a. Balances and changes**

At March 31, 2026, the nature and composition of the provisions with a probable risk of loss, and details of the contingent liability, provision for dismantling, refunds to customers and provision for fines for cancellation of lease contracts are the same as in Note <u>20. Provision and contingencies</u>, disclosed in the financial statements for the year ended December 31, 2025.

The balances and changes in the provision for probable risk of losses, in addition to contingent liabilities, provision for dismantling, amounts to be refunded to customers and provision for fines for cancellation of lease contracts are:

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

---

| | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** |
|  | **Provision for legal clains** | **Provision for legal clains** | **Provision for legal clains** | **Provision for legal clains** | **Provision for legal clains** | **Provision for fines for canceling lease agreements** | **Provision for decommissioning** | **Amounts to be refunded to customers** | **Total** |
|  | **Tax** | **Regulatory** | **Civil** | **Labor** | **Contingent liabilities (PPA)** | **Provision for fines for canceling lease agreements** | **Provision for decommissioning** | **Amounts to be refunded to customers** | **Total** |
| **Balance on December 31, 2024** | **1862501** | **1151095** | **1406253** | **891398** | **1053512** | **41005** | **408949** | **90663** | **6905376** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions (reversal), net (Note 26) | 29880 | (7252) | 65486 | 100490 | (6300) | 5490 | (3878) | (90663) | 93253 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other additions<sup>(1)</sup> |  | (172320) |  |  |  |  | 1832 |  | (170488) |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs due to payment | (4848) | (384) | (105314) | (91664) |  | (20) |  |  | (202230) |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest accruals (Note 27) | 34828 | 13587 | 37485 | 57487 | 23479 |  | 1516 |  | 168382 |
| **Balance on March 31, 2025** | **1922361** | **984726** | **1403910** | **957711** | **1070691** | **46475** | **408419** | **—** | **6794293** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions (reversal), net | 76490 | 23294 | 190369 | 276987 | (16508) | (2194) | (19374) |  | 529064 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other additions (reversal) | (75119) |  |  |  |  |  | 8170 |  | (66949) |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs due to payment | (57407) | (9778) | (285126) | (422594) |  | (2331) |  |  | (777236) |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest accruals | 102670 | 75720 | 120173 | 149938 | 87949 |  | 12713 |  | 549163 |
| **Balance on December 31, 2025** | **1968995** | **1073962** | **1429326** | **962042** | **1142132** | **41950** | **409928** | **—** | **7028335** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions (reversal), net (Note 26) | 16115 | (4720) | 111809 | 52791 | (7307) | (4614) | (1530) |  | 162544 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other additions (reversal) |  |  |  |  |  |  | 2614 |  | 2614 |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs due to payment | (30437) | (4676) | (74653) | (86636) |  | (658) |  |  | (197060) |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest accruals (Note 27) | 8999 | 9118 | 52651 | 33082 | 49655 |  | 1711 |  | 155216 |
| **Balance on March 31, 2026** | **1963672** | **1073684** | **1519133** | **961279** | **1184480** | **36678** | **412723** | **—** | **7151649** |
| **Balance on December 31, 2025** |  |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Current | 79768 | 55651 | 745614 | 659582 |  | 41950 |  |  | 1582565 |
| &nbsp;&nbsp;&nbsp;&nbsp;Non-current | 1889227 | 1018311 | 683712 | 302460 | 1142132 |  | 409928 |  | 5445770 |
| **Total** | **1968995** | **1073962** | **1429326** | **962042** | **1142132** | **41950** | **409928** | **—** | **7028335** |
| **Balance on March 31, 2026** |  |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Current | 81198 | 60271 | 803442 | 650223 |  | 36678 |  |  | 1631812 |
| &nbsp;&nbsp;&nbsp;&nbsp;Non-current | 1882474 | 1013413 | 715691 | 311056 | 1184480 |  | 412723 |  | 5519837 |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total** | **1963672** | **1073684** | **1519133** | **961279** | **1184480** | **36678** | **412723** | **—** | **7151649** |

---

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

---

| | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** |
|  | **Provision for legal claims** | **Provision for legal claims** | **Provision for legal claims** | **Provision for legal claims** | **Provision for legal claims** | | | | |
|  | **Tax** | **Regulatory** | **Civil** | **Labor** | **Contingent liabilities (PPA)** | <br>**Provision for fines for canceling lease agreements** | <br>**Provision for decommissioning** | <br>**Amounts to be refunded to customers** | <br>**Total** |
| **Balance on December 31, 2024** | **2022987** | **1151095** | **1411141** | **935541** | **1075139** | **41005** | **412214** | **90663** | **7139785** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions (reversal), net (Note 26) | 29873 | (7252) | 65677 | 100222 | (6300) | 5490 | (5232) | (90663) | 91815 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other additions (reversal) |  | (172320) |  | 3 | (1745) |  | 1832 |  | (172230) |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs due to payment | (4848) | (384) | (105562) | (92560) |  | (20) |  |  | (203374) |
| &nbsp;&nbsp;&nbsp;&nbsp;Business combination – Samauma | 4189 |  |  | 4572 | 2368 |  |  |  | 11129 |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest accruals (Note 27) | 36842 | 13587 | 37240 | 57985 | 23852 |  | 1517 |  | 171023 |
| **Balance on March 31, 2025** | **2089043** | **984726** | **1408496** | **1005763** | **1093314** | **46475** | **410331** | **—** | **7038148** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions (reversal), net | 76708 | 23294 | 192309 | 277772 | (20440) | (2194) | (20688) |  | 526761 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other additions (reversal) | (75119) |  |  | (1) | 1745 |  | 8170 |  | (65205) |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs due to payment | (57609) | (9778) | (287052) | (426509) | (1544) | (2331) |  |  | (784823) |
| &nbsp;&nbsp;&nbsp;&nbsp;Business combination – IPNET | (38123) |  |  | (24795) |  |  |  |  | (62918) |
| &nbsp;&nbsp;&nbsp;&nbsp;Business combination – Samauma | 595 |  |  | (3999) | 94 |  |  |  | (3310) |
| &nbsp;&nbsp;&nbsp;&nbsp;Business combination – FiBrasil |  |  |  | 1528 | 24065 |  |  |  | 25593 |
| &nbsp;&nbsp;&nbsp;&nbsp;Business combination – Cyber | 1663 |  |  | 158 |  |  |  |  | 1821 |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest accruals | 107913 | 75720 | 120912 | 148635 | 89401 |  | 12711 |  | 555292 |
| **Balance on December 31, 2025** | **2105071** | **1073962** | **1434665** | **978552** | **1186635** | **41950** | **410524** | **—** | **7231359** |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions (reversal), net (Note 26) | 16114 | (4720) | 111975 | 52841 | (7307) | (4614) | (1530) |  | 162759 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other additions (reversal) |  |  |  |  |  |  | 2614 |  | 2614 |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs due to payment | (30437) | (4676) | (74943) | (87017) |  | (658) |  |  | (197731) |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest accruals (Note 27) | 10887 | 9118 | 52342 | 33032 | 49926 |  | 1711 |  | 157016 |
| **Balance on March 31, 2026** | **2101635** | **1073684** | **1524039** | **977408** | **1229254** | **36678** | **413319** | **—** | **7356017** |
| **Balance on December 31, 2025** |  |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Current | 89274 | 55651 | 749193 | 662626 | 8166 | 41950 | 596 |  | 1607456 |
| &nbsp;&nbsp;&nbsp;&nbsp;Non-current | 2015797 | 1018311 | 685472 | 315926 | 1178469 |  | 409928 |  | 5623903 |
| **Total** | **2105071** | **1073962** | **1434665** | **978552** | **1186635** | **41950** | **410524** | **—** | **7231359** |
| **Balance on March 31, 2026** |  |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Current | 90982 | 60271 | 806946 | 652782 | 8671 | 36678 | 596 |  | 1656926 |
| &nbsp;&nbsp;&nbsp;&nbsp;Non-current | 2010653 | 1013413 | 717093 | 324626 | 1220583 |  | 412723 |  | 5699091 |
| **Total** | **2101635** | **1073684** | **1524039** | **977408** | **1229254** | **36678** | **413319** | **—** | **7356017** |

---

(1) In 2025, relevant events occurred in the movements of tax and regulatory provisions: (i) tax: due to the
Company's adherence to tax amnesty programs in several states of the Federation, with gains from the reversal of operating expenses of
provision for contingencies of R$25,638 (note 26), gains from the reversal of financial expenses of monetary updating of provisions for
contingencies of R$65,990 (note 27) and assumption of debt of R$75,119 (note 20); and (ii) regulatory: due to adherence to the Desenrola
program.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

 **19. b. Tax provision and contingencies**

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Company** | **Company** | **Consolidated** | **Consolidated** |
| <br>**Nature/Expected Risk of loss** | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| **Probable** | **1963672** | **1968995** | **2101635** | **2105071** |
| &nbsp;&nbsp;&nbsp;Federal | 712539 | 700738 | 848834 | 835180 |
| &nbsp;&nbsp;&nbsp;State | 417826 | 494960 | 419494 | 496594 |
| &nbsp;&nbsp;&nbsp;Municipal | 134602 | 132899 | 134602 | 132899 |
| &nbsp;&nbsp;&nbsp;FUST | 698705 | 640398 | 698705 | 640398 |
| **Possible** | **50854537** | **50649037** | **51322299** | **51086071** |
| &nbsp;&nbsp;&nbsp;Federal | 4456616 | 5775198 | 4485334 | 5803304 |
| &nbsp;&nbsp;&nbsp;State | 34796356 | 33476863 | 34796931 | 33477423 |
| &nbsp;&nbsp;&nbsp;Municipal | 417627 | 428867 | 827136 | 808770 |
| &nbsp;&nbsp;&nbsp;FUST, FUNTTEL and FISTEL | 11183938 | 10968109 | 11212898 | 10996574 |

---

*19.b.1. Tax provisions*

Management, under the advice of legal counsel, believes that the following losses present a probable risk of loss for the federal, state, municipal and regulatory (FUST) tax proceedings:

*<u>Federal taxes</u>*

The Company and/or its subsidiaries are party to administrative and legal proceedings at the Federal level relating to: (i) claims for the non-ratification of compensation and refund requests; (ii) IRRF and CIDE on remittances abroad related to technical and administrative assistance and similar services, as well as royalties; (iii) Social Investment Fund (*Finsocial*) offset amounts; (iv) additional charges to the PIS and COFINS tax base, as well as additional charges for COFINS required by Law No. 9,718/1998; and (v) ex-tariff, cancellation of the benefits under CAMEX Resolution No. 6, increase in the import duty from 4% to 28%.

*<u>State taxes</u>*

The Company and/or its subsidiaries are party to administrative and judicial proceedings at the State level for ICMS, for: (i) disallowance of credits; (ii) nonpayment of tax on alleged telecommunications services; (iii) tax credit for challenges/disputes over telecommunication services not provided or wrongly charged (Agreement 39/01); (iv) rate differential; (v) leasing of infrastructure for internet services (data); (vi) outflows of goods with prices lower than those of acquisition; (vii) nonpayment of tax on discounts to customers; (viii) unmeasured services; (ix) CIAP credit; (x) monthly subscription, not covered by the modulation of the effects resulting from the judgment of the STF; and (xi) fine for non-compliance with an accessory obligation.

*<u>Municipal taxes</u>*

The Company and/or its subsidiaries are party to Municipal tax proceedings, at the judicial level, relating to: (i) Property tax ("IPTU"); (ii) Services tax ("ISS") on equipment leasing services, non-core activities and supplementary activities and withholding of ISS on contractors' services.

*<u>FUST</u>*

The Company and/or its subsidiaries have judicial proceedings related to the non-inclusion of interconnection expenses and industrial exploitation of a dedicated line in the calculation basis of FUST.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

 *19.b.2. Possible risk of loss - tax contingencies*

Management, under the advice of legal counsel, believes that the risk of loss for the following federal, state, municipal and regulatory (FUST, FUNTTEL and FISTEL) is possible:

*<u>Federal taxes</u>*

The Company and/or its subsidiaries are party to administrative and judicial proceedings, at the Federal level, which are awaiting decision at different court levels.

The more significant proceedings are: (i) contested non approval of requests for compensation submitted by the Company; (ii) INSS (a) SAT, social security amounts owed to third parties (INCRA and SEBRAE); (b) meals for employees, withholding of 11% (assignment of workforce); and (c) Stock Options – requirement of social security contributions on amounts paid to employees under the stock option plan; (iii) deduction of COFINS on swap operation losses; (iv) PIS and COFINS: (a) accrual basis versus cash basis; (b) levies on value-added services; and (c) monthly subscription services; (v) IPI levied on shipment of fixed access units from the Company's establishment; (vi) Financial transaction tax (IOF) – on loan transactions, intercompany loans and credit transactions; (vii) IRRF on capital gain on the sale of the GVT Group to the Company; and (viii) exclusion of ICMS from the PIS and COFINS calculation base.

*<u>State taxes</u>*

The Company and/or its subsidiaries maintain several administrative and judicial actions at the state level, related to ICMS (Tax on Circulation of Goods and Services), which are awaiting judgment at various court levels, including: (i) rental of movable property; (ii) reversal of untimely credits; (iii) provision of services outside of São Paulo with collection for the State of São Paulo; (iv) co-billing; (v) tax substitution with fictitious calculation basis (tax schedule); (vi) use of credits from the acquisition of electricity; (vii) ancillary activities, value-added and supplementary services; (viii) tax credits related to challenges/contests regarding telecommunications services not provided or erroneously charged (Agreement 39/01); (ix) deferred collection related to interconnection (Detraf); (x) credits arising from tax benefits; (xi) disallowance of tax incentives related to cultural projects; (xii) crediting of goods intended for fixed assets and transfers of these goods between own establishments; (xiii) credits for the tax on communication services used in the provision of services of the same nature; (xiv) discussions on the activation of recharges in the prepaid service; (xv) reversal of credit resulting from a loan operation, in the assignment of networks (own consumption and exemption for public bodies); (xvi) CDR/Detraf fine; (xvii) own consumption; (xviii) exemption for public bodies; (xix) amounts given as discounts; (xx) monthly subscription with discussion about minutes allowance; and (xxi) fine for non-compliance with ancillary obligation.

*<u>Municipal taxes</u>*

The Company and/or its subsidiaries are party to administrative and judicial proceedings, at the Municipal level, which are awaiting decision at different court levels.

The more significant proceedings are: (i) ISS on: (a) non-core activity, value-added and supplementary services; (b) withholding at source; (c) call identification and mobile phone licensing services; (d) full-time services, provision, returns and cancelled tax receipts; (e) data processing and antivirus; (f) charge for use of mobile network and lease of infrastructure; (g) advertising services; and (h) services provided by third parties; (ii) IPTU; (iii) land use tax; and (iv) various municipal charges.

*<u>FUST, FUNTTEL and FISTEL</u>*

*<u>Universal Telecommunications Services Fund ("FUST")</u>*

Writs of mandamus were filed seeking the right to exclude revenues from interconnection and Industrial Use of Dedicated Line ("EILD") in the FUST tax base, according to Abridgment No. 7 of December 15, 2005, as it does not comply with the provisions contained in the sole paragraph of Article 6 of Law No. 9,998/2000, which are awaiting a decision from Higher Courts.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

Various administrative and judicial charges by ANATEL in administrative scope for the constitution of the tax credit related to interconnection, EILD and other revenues that do not originate from the provision of telecommunication services.

On March 31, 2026 and December 31, 2025, the consolidated amount totaled R$6,308,158 and R$6,166,037, respectively.

<u>Fund for Technological Development of Telecommunications ("FUNTTEL")</u>

Proceedings have been filed to exempt interconnection revenues and any others arising from the use of resources that are party of the networks in the FUNTTEL tax calculation basis, as determined by Law 10,052/2000 and Decree No. 3,737/2001, pursuant to Article 4, paragraph 5, of Resolution 95/2013.

There are several notifications of charges from the Ministry of Communications in administrative actions for constitution of the tax credit related to the interconnection, network resources and other revenues that do not originate from the provision of telecommunication services.

On March 31, 2026 and December 31, 2025, the consolidated amount totaled R$2,395,251 and R$2,344,915, respectively.

<u>Telecommunications Inspection Fund ("FISTEL")</u>

There are judicial actions for the collection of TFI on: (i) extensions of the term of validity of the licenses for use of telephone exchanges associated with the operation of the fixed switched telephone service; and (ii) extensions of the period of validity of the right to use radio frequency associated with the operation of the telephone service personal mobile service.

On March 31, 2026 and December 31, 2025, the consolidated amount totaled R$2,509,489 and R$2,485,622, respectively.

**19. c. Regulatory provision and contingencies**

---

| | | |
|:---|:---|:---|
| | **Company / Consolidated** | **Company / Consolidated** |
| <br>**Nature/Expected Risk of loss** | **03.31.2026** | **12.31.2025** |
| Probable | 1073684 | 1073962 |
| Possible | 3241381 | 3237934 |

---

*19.c.1. Regulatory provisions*

Management, under the advice of legal counsel, believes the likelihood of loss of the following regulatory proceedings to be probable:

The Company is a party to administrative proceedings initiated mainly by ANATEL, alleging non-compliance with sectoral regulations, as well as filing legal proceedings, mostly, sanctions applied by ANATEL at the administrative level. These include:

• <u>Burden:</u> Specifically regarding the payment of the onerous charge applied to Personal Mobile Service
(SMP) (SMP burden), there is a dispute as to whether revenues are due for radio frequency renewal. Management, under the advice of legal
counsel, assesses that there is a probable loss for the SMP burden regarding data revenue, due to the existence of unfavorable decisions
both by ANATEL in 2021 and in the lower court. Although the Company managed to overturn one of the unfavorable decisions, the judgment
of the Company's Appeal in the lower court was not final, and ANATEL has already appealed. The Company is now prospectively paying amounts
for ANATEL, starting in 2022, accordingly, the provision is maintained.

• <u>General User Rights ("DGU"):</u> The Company and/or its subsidiaries are involved in administrative
and judicial discussions regarding the rights of users of telecommunications services, with regard the General Regulation of Consumer
Rights of Telecommunications Services ("RGC"), approved by Resolution No. 632/2014, especially regarding the provision of
services, collection of amounts, disputes, reimbursement, among others.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

• <u>Quality:</u> The Company and/or its subsidiaries are involved in administrative and judicial discussions
regarding telecommunications services arising from SMP, SeAC and SCM concessions, compliance with the indicators that measure the quality
of these services nationwide, based on the Telecommunications Services Quality Regulation ("RQUAL"), approved by Resolution
No. 717/2019.

• <u>Relationship with other Providers</u>: The Company and/or its subsidiaries are involved in administrative
and legal discussions affecting the regulatory relationship with other telecommunications service providers regarding interconnection,
EILD, and the supply of other wholesale products.

The consolidated provisions totaled R$987,614 and R$989,545 on March 31, 2026 and December 31, 2025, respectively.

<u>Other cases:</u>

&nbsp;&nbsp;&nbsp;&nbsp;• The Company and/or its subsidiaries are involved in administrative and legal discussions regarding other
matters, including for service interruptions, various regulatory obligations, technical irregularities, Public Civil Actions, among others.

&nbsp;&nbsp;&nbsp;&nbsp;• On October 1, 2024, the Company was advised of a Monitoring and Control Procedure ("PAC") for
Reimbursement to monitor compliance with the obligation to compensate consumers identified in a Procedure for Determining Non-Compliance
with Obligations ("PADO") that is in progress. As the original PADO has not issued its final decision, a request was made to
suspend the PAC, which was accepted by ANATEL through a Decision.

The consolidated amounts provisions totaled R$86,070 and R$84,417 on March 31, 2026 and December 31, 2025, respectively.

*19.c.2. Possible risk of losses - regulatory contingencies*

Management, under the advice of legal counsel, believes the likelihood of loss of the following regulatory proceedings is possible:

&nbsp;&nbsp;&nbsp;&nbsp;• Dispute regarding the revenues to be included in the calculation of the fee due for the extension of radio
frequencies associated with SMP (except for SMP data revenues, as informed in item c.1 of this note). In ANATEL's view, the fee should
consider 2% applie to percentage on all economic benefits arising from the provision of the SMP service. However, in the Company's view,
revenues that are not part of the SMP service plans, such as interconnection, SVA, revenues earned in the 15th year of the license validity,
and others, should not be considered in the fee calculation. Accordingly, the Company filed administrative claims and lawsuits to challenge
ANATEL's fee charges. In July 2024, the ANATEL Board of Directors judged the PAC (Annual Permit for the Development of the Telecommunications
Sector) regarding the calculation of the burden for the 2016 biannual period, related to the extension of the radio frequency associated
with the SMP (Mobile Personal Service), the result of which was partially favorable to the Company, insofar as it decided to include the
terms of lesser scope in the calculation methodology, resulting in a reduction of values. In this vein, ANATEL has already recalculated
the bienniums of 2017, 2018, and 2022 to reflect the effects of the decision, with the remaining ones pending recalculation by ANATEL.
It is estimated that, with a prognosis of possible loss of the SMP burden, the value is approximately is R$1,186,295 and R$1,182,102 on March 31, 2026 and December 31, 2025, respectively.

&nbsp;&nbsp;&nbsp;&nbsp;• In 2026, R$34,853 was received due to the filing of the SMP (Mobile Personal Service) burden declaration
for the 2025/2026 biennium, under PAC No. 53500.099440/2025-06, relating to items that the Company considers controversial and are the
subject of dispute with ANATEL (Brazilian National Telecommunications Agency).

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

&nbsp;&nbsp;&nbsp;&nbsp;• Legal proceeding filed by the Company to overturn a decision by CADE, alleging that certain operators
(Claro, Oi Móvel and the Company) had engaged in anticompetitive conduct by forming the Rede Correios Consortium to compete in
electronic auction No. 144/2015, held by the Brazilian Post and Telegraph Company; and that there was alleged price discrimination by
the Company in relation to services offered to BT Brasil Serviços de Telecomunicações Ltda ("BT"), imposing
a fine of R$28,394, which plus interest totals R$42,449 and R$43,260 on March 31, 2026 and
December 31, 2025, respectively. This action seeks to annul the aforementioned sanction, based on (i) no legal prohibition to form a consortium
to participate in a public bidding process; (ii) the lack of typicality and the impossibility of sanctioning by analogy; and (iii) the
absence of clear criteria for calculating the sanction and the lack of reasonableness. The case is in the lower courts awaiting a ruling.

&nbsp;&nbsp;&nbsp;&nbsp;• The PADO that deals with coverage targets for which the fine applied was R$127,741, plus interest totaling
R$188,806 and R$184,486 on March 31, 2026 and December 31, 2025, respectively, in lieu of
settling the fine in cash by providing investment in the installation of a 4G radio base station in 188 locations with no access to this
technology, within two and a half years, including year one maintenance costs. The installation will not be performed by range sharing,
swap, network rental, industrial exploration contracts, or other contractual means. Upon confirmation by ANATEL, compliance within the
determined period has been subject to monitoring.

&nbsp;&nbsp;&nbsp;&nbsp;• On October 1, 2024, the Company was advised of a Monitoring and Control Procedure ("PAC")
for Compensation to monitor compliance with the obligation to provide compensation to consumers identified in a Procedure for Determining
Non-Compliance with Obligations ("PADO") which is in progress, which plus interest totals R$41,663 and R$40,524 on March 31, 2026 and December 31, 2025, respectively. As the original PADO has no final decision yet, a request was made to suspend the
PAC, which was accepted by ANATEL.

The consolidated estimates totaled R$1,494,066 and R$1,450,372 on March 31, 2026 and December 31, 2025, respectively.

In addition to the cases above, the Company is involved in administrative proceedings instituted mainly by ANATEL (other agents, including other operators, also have claims against the Company) based on alleged non-compliance with sectoral regulations, as well as ordinary legal proceedings and writs of mandamus, mainly, sanctions applied by ANATEL in the administrative sphere (Note 19.c.1.), namely: General User Rights ("DGU"); Quality and Relationship between Providers. The consolidated amounts involved totaled R$1,294,041 and R$1,315,968 on March 31, 2026 and December 31, 2025, respectively.

<u>Other cases:</u>

• The Company and/or its subsidiaries are involved in administrative and legal matters, such as coverage
targets, service interruptions, various regulatory obligations, technical irregularities, payment of public prices for the acquisition
of radio frequencies, compensation for unused frequency bands previously granted to the MMDS, Public Civil Actions, among others.

• The Company is a party to legal proceedings concerning the suspension of services, non-increase of tariffs,
repairs and maintenance of poles, not currently inestimable. These proceedings are still awaiting judgment in the respective courts.

The consolidated estimates totaled R$453,274 and R$471,594 on March 31, 2026 and December 31, 2025, respectively.

**19. d. Civil provision civil contingencies**

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Company** | **Company** | **Consolidated** | **Consolidated** |
| <br>**Nature/Estimated Risk of loss** | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| Probable | 1519133 | 1429326 | 1524039 | 1434665 |
| Possible | 1858841 | 1799895 | 1876235 | 1815801 |

---

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

 *19.d.1. Civil provisions*

Management, under the advice of legal counsel, believes that the following civil proceedings will result in losses:

&nbsp;&nbsp;&nbsp;&nbsp;• The Company is a party to proceedings involving rights to the supplementary amounts from shares calculated on community telephony plants and network expansion plans since 1996 (supplement of share proceedings). These proceedings are at different stages: lower courts, court of justice and high court of justice. On March 31, 2026 and December 31, 2025, the provision was R$124,901 and R$133,322, respectively.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• The Company and/or its subsidiaries are party to various civil proceedings related to individual matters at a consumer level, relating to the non-provision of services and/or products sold. On March 31, 2026 and December 31, 2025, the provision was R$253,762 and R$250,015, respectively.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• The Company and/or its subsidiaries are party to various civil proceedings of a consumer and non-consumer nature at administrative and judicial levels, all arising in the ordinary course of business. On March 31, 2026 and December 31, 2025, the provision was R$1,145,376 and R$1,051,328, respectively.

*19.d.2. Possible losses - civil contingencies*

Management, under the advice of legal counsel, believes that the risk of losses is possible for the following civil proceedings:

&nbsp;&nbsp;&nbsp;&nbsp;• The Company and its subsidiaries are party to other civil claims, at several levels, related to service
rendering rights. Such claims have been filed by individual consumers, civil associations representing consumer rights of consumers or
by the Consumer Protection ("PROCON"), as well as by the Federal and State Public Prosecutor's Office. The Company is also
party to other claims of several types related to the ordinary course of business.

&nbsp;&nbsp;&nbsp;&nbsp;• Intellectual Property: Lune Projetos Especiais Telecomunicação Comércio e Ind. Ltda.
("Lune"), a Brazilian company, filed lawsuits on November 20, 2001, against 23 wireless carriers claiming to own the patent
for "Bina", a caller ID. The purpose of the lawsuit was to interrupt provision of such service by carriers and to seek indemnification
equivalent to the amount paid by consumers for using the service.

An unfavorable decision was handed down determining that the Company should refrain from selling mobile phones with the Bina ID service, subject to a daily fine of R$10,000.00 (Ten thousand reais) in the event of non-compliance. Furthermore, according to that decision, the Company must pay indemnification for royalties, to be calculated on settlement. Motions for Clarification were proposed by all parties and Lune's motions for clarification were accepted since an injunctive relief in this stage of the proceedings was deemed applicable. A review appeal was filed which granted a stay of execution suspending the unfavorable decision until final judgment in view of the sentence handed down on June 30, 2016, by the 4th Chamber of the Court of Justice of the Federal District, to annul the lower court sentence and remit the proceedings back to the lower court for a new examination. An expert report was submitted and the claims were dismissed. The parties filed an appeal. On February 1, 2023, the Court of Justice of the Federal District and Territories ("TJDFT") judged the appeals and, unanimously, dismissed them, upholding the sentence of inadmissibility. Subsequently, a Special Appeal was filed by Lune, addressed by the Superior Court of Justice. An internal appeal was filed by Lune, which has not yet been judged. Management is unable to reasonably estimate a liability with respect to this claim.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

• The Company, together with other operators that provide telecommunications services, is a defendant in
disputes that challenge the practice adopted by operators of imposing a prescriptive term for the use of prepaid minutes. In other words,
the plaintiff claims that the minutes of the prepaid package should not expire after the end of a specific term, and can be used at any
time by the consumer. The TRF of the 6th Region, the public civil action that was originally processed in Uberlândia/MG forwarded
it to the new TRF, which rejected the necessary referral, maintaining the inadmissibility of the claims made by the MPF, with the decision
of the TRF of the 6th Region having already become final. There is still an ongoing public civil action, which was originally processed
in Belém/PA, which is awaiting judgment in the TRF of the 1st Region, as well as the public civil action proposed by the OAB/SP
against the Federal Union, ANATEL and operators, which was summarily extinguished, but which, by decision of the TRF of the 3rd Region,
determined the processing of the action, without any sentence having been handed down yet.

**19. e. Labor provision and contingencies**

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Company** | **Company** | **Consolidated** | **Consolidated** |
| <br>**Nature/Estimated Risk of loss** | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| Probable | 961279 | 962042 | 977408 | 978552 |
| Possible | 1126601 | 1132609 | 1144096 | 1151825 |

---

The labor provision and contingencies involve several labor claims of former employees and former outsourced employees (claiming secondary obligor or joint liability), for among others: differences in overtime pay, variable remuneration, salary parity, additional unhealthy or dangerous practices.

20. LOANS, FINANCING, DEBENTURES, LEASES AND OTHER CREDITORS

On March 31, 2026, the contractual conditions of loans, financing, debentures and leases are the same as in <u>Note 21. Loans, Financing, Debentures, Leases and Other Creditors</u>, disclosed in the financial statements for the year ended December 31, 2025.

**20. a. Balances**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **03.31.2026** | **03.31.2026** | **12.31.2025** | **12.31.2025** | **12.31.2025** |
|  | **Current** | **Non-current** | **Total** | **Current** | **Non-current** | **Total** |
| **Leases (a.1)** | **4814965** | **10217313** | **15032278** | **4883176** | **10549678** | **15432854** |
| **Debentures (a.2)** | **94035** | **2921459** | **3015494** | **161453** | **2905512** | **3066965** |
| **Loans and financing** | **283605** | **1539032** | **1822637** | **304235** | **1542627** | **1846862** |
|  **5G Licenses** | **70500** | **987007** | **1057507** | **68932** | **965032** | **1033964** |
|  **Liabilities for acquisition of a company** | **43018** | **238941** | **281959** | **42251** | **234048** | **276299** |
|  **Tax Refinancing and Amnesty Program** | **138658** | **227027** | **365685** | **158295** | **247010** | **405305** |
|  **Financial institutions** | **1993** | **474** | **2467** | **2200** | **1474** | **3674** |
|  **Other creditors** | **29436** | **85583** | **115019** | **32557** | **95063** | **127620** |
| **Total** | **5192605** | **14677804** | **19870409** | **5348864** | **14997817** | **20346681** |

---

All liabilities were contracted in Brazilian Reais (R$), except for the loan agreement entered into on September 26, 2024, between the Company's subsidiary - CloudCo Brasil and Telefónica Cybersecurity & Cloud Tech (a Telefónica Group company), which was contracted in Euros.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

 *20.a.1. Leases*

The consolidated annual weighted average rates of the lease contracts were 12.69% and 12.92%, with average maturity terms of 4.82 years and 4.86 years on March 31, 2026 and December 31, 2025, respectively.

The balances of the lease payables are as follows:

---

| | | |
|:---|:---|:---|
|  | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** |
| Nominal value payable | 20035425 | 20692942 |
| Unrealized financial expenses | (5003147) | (5260088) |
| **Present value payable** | **15032278** | **15432854** |
| Current | 4814965 | 4883176 |
| Non-current | 10217313 | 10549678 |

---

*20.a.2. Debentures*

The debentures are "Sustainability-linked", (Debentures linked to Environmental, Social and Corporate Governance ("ESG") performance), as defined by the International Capital Market Association for the Sustainability-Linked Bond Principles, June 2020 version.

The debentures are subject to early maturity events, as set out in clause 6.30 of "Early Maturity" of the Deed of Issuance ("Deed"), which may or may not be automatic upon: (i) non-compliance , by the Company, of any pecuniary or non-pecuniary obligation relating to the debentures and/or provided for in the Deed, not resolved within the deadlines provided for in the Deed; (ii) liquidation, dissolution or extinction of the Company in the manner provided for in the Deed; (iii) spin-off, merger, incorporation, incorporation of shares or any form of corporate reorganization involving the Company, as provided for in the Deed; (iv) early maturity of any debts and/or financial obligations of the Company within the scope of the financial market and capital market operations, local or international, under the terms set out in the Deed; (v) make the distribution and/or payment of dividends, interest on equity or make any other payments to its shareholders, if the Company is in default with any of its pecuniary obligations relating to the debentures; (vi) transfer, by the Company, by any means, assignment or promise of assignment to third parties, of the rights and obligations acquired or assumed in the documents relating to the debentures; (vii) reduction of the Company's share capital, as provided for in article 174, paragraph 3, of the Brazilian Corporation Law, except if for (a) absorption of losses or (b) distribution of resources to the Company's shareholders, up to the limit of 15% of the Company's share capital, individually or in aggregate, on the date of execution of the Deed of Issue; and (viii) disposal of, or creation of liens or encumbrances on, relevant operating assets of the Company, provided that they represent, individually or in aggregate, 15% or more of the Company's total assets, based on the Periodic Financial Statements immediately prior to the date of the event.

Failure to comply with any of the above covenants could result in default under the debenture indenture, which would have a material adverse effect on the Company's financial condition. These clauses are strictly monitored by the Company, aiming to ensure compliance with contractual obligations and guarantee the continuity of the debenture and maintenance of the Company's financial situation.

On March 31, 2026 and December 31, 2025, all applicable covenants had been complied with by the Company.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

On April 15, 2024, FiBrasil issued a single series of simple debentures in the amount of R$865,000, not convertible into shares, unsecured, under the terms of the Issuance Deed and article 58 of the Brazilian Corporations Law, and without any additional real or personal guarantee. It placed 865,000 debentures with a nominal unit value of R$1,000.00 (one thousand reais). The total term of the debentures is 10 years, maturing in April 2034, inflation indexed by value subject to monetary correction by the Broad National Consumer Price Index ("IPCA"). The payments of the updated amounts will be made in 5 consecutive annual installments, starting in April 2030 and ending in April 2034.

The interest on the debentures will accrue at a rate of 7.36% per year, calculated on a basis of 252 business days, on the updated nominal value of the debentures, adjusted for inflation (IPCA). Interest payments will be made semi-annually, in April and October of each year, with the first payment made in October 2024 and the last payment on the maturity date of the debentures, in April 2034.

The deed of issuance covenants, stipulate that ratio of Net Debt/EBITDA must be less than or equal to 3.5x.

On March 31, 2026 and December 31, 2025, the applicable covenants had been met by FiBrasil.

 

**20. b. Repayment schedule (non-current)**

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** |
| <br>**Year** | **Leases** | **Debentures** | **5G Licenses** | **Liabilities for the acquisition of companies** | **Tax amnesty program** | **Financial institutions** | **Other creditors** | **Total** |
| 13 to 24 months | 3469744 | 2000000 | 70500 | 70620 | 105155 | 474 | 75794 | 5792287 |
| 25 to 36 months | 2680523 |  | 70500 | 37527 | 105155 |  | 9789 | 2903494 |
| 37 to 48 months | 1878582 |  | 70500 | 94055 | 16717 |  |  | 2059854 |
| 49 to 60 months | 979093 | 184292 | 70500 | 36739 |  |  |  | 1270624 |
| From 61 months | 1209371 | 737167 | 705007 |  |  |  |  | 2651545 |
| **Total** | **10217313** | **2921459** | **987007** | **238941** | **227027** | **474** | **85583** | **14677804** |

---

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

**20. c. Changes in balances**

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** |
|  | **Leases** | **Debentures** | **5G Licenses** | **Financial institutions** | **Liabilities for the acquisition of companies** | **Refinancing and Amnesty Program** | **Other creditors** | **Total** |
| **Balance on December 31, 2024** | **15246606** | **3695214** | **1004970** | **4886** | **233349** | **444362** | **117143** | **20746530** |
| &nbsp;&nbsp;&nbsp;&nbsp;Income, with effects on cash and cash equivalents |  |  |  |  |  |  | 20000 | 20000 |
| &nbsp;&nbsp;&nbsp;&nbsp;Income, excluding cash and cash equivalents | 510588 |  |  |  |  |  | 228442 | 739030 |
| &nbsp;&nbsp;&nbsp;&nbsp;Exchange variation (Note 27) |  |  |  |  |  |  | (1642) | (1642) |
| &nbsp;&nbsp;&nbsp;&nbsp;Financial charges / Fair value (Note 27) | 413878 | 115712 | 21769 | 158 | 5190 | 11450 | 8392 | 576549 |
| &nbsp;&nbsp;&nbsp;&nbsp;Settlement by offsetting judicial deposit |  |  |  |  |  | (38745) |  | (38745) |
| &nbsp;&nbsp;&nbsp;&nbsp;Business combination – Samauma |  |  |  | 11921 | 58000 |  |  | 69921 |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs (cancellation of contracts) | (57351) |  |  |  |  |  |  | (57351) |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs (payments) – Principal | (842943) |  |  | (751) | (3792) | (20112) | (2094) | (869692) |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs (payments) – financial charges | (405842) | (210154) |  | (158) | (67) | (3334) | (5655) | (625210) |
| **Balance on March 31, 2025** | **14864936** | **3600772** | **1026739** | **16056** | **292680** | **393621** | **364586** | **20559390** |
| &nbsp;&nbsp;&nbsp;&nbsp;Income, excluding cash and cash equivalents | 3189549 |  |  |  |  | 129766 | (62227) | 3257088 |
| &nbsp;&nbsp;&nbsp;&nbsp;Exchange variation |  |  |  |  |  |  | 1885 | 1885 |
| &nbsp;&nbsp;&nbsp;&nbsp;Financial charges / Fair value | 1289967 | 316230 | 76157 | 490 | 11110 | 29039 | 25510 | 1748503 |
| &nbsp;&nbsp;&nbsp;&nbsp;Business combination – Samauma |  |  |  | 738 | (13549) |  |  | (12811) |
| &nbsp;&nbsp;&nbsp;&nbsp;Business combination – FiBrasil | 82533 | 904164 |  |  |  |  |  | 986697 |
| &nbsp;&nbsp;&nbsp;&nbsp;Business combination – CyberCo Brasil |  |  |  |  | 16332 |  |  | 16332 |
| &nbsp;&nbsp;&nbsp;&nbsp;Business combination – Vale Saúde Sempre | (164526) |  |  |  |  |  |  | (164526) |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs (cancellation of contracts) | (2479088) | (1500000) | (46437) | (12995) | (26717) | (115599) | (181496) | (4362332) |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs (payments) – financial charges | (1350517) | (254201) | (22495) | (615) | (3557) | (31522) | (20638) | (1683545) |
| **Balance on December 31, 2025** | **15432854** | **3066965** | **1033964** | **3674** | **276299** | **405305** | **127620** | **20346681** |
| &nbsp;&nbsp;&nbsp;&nbsp;Income, excluding cash and cash equivalents | 547090 |  |  |  |  |  |  | 547090 |
| &nbsp;&nbsp;&nbsp;&nbsp;Exchange variation (Note 27) |  |  |  |  |  |  | (3496) | (3496) |
| &nbsp;&nbsp;&nbsp;&nbsp;Financial charges / Fair value (Note 27) | 447558 | 108138 | 23543 | 95 | 5660 | 9776 | 6268 | 601038 |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs (cancellation of contracts) | (22388) |  |  |  |  |  |  | (22388) |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs (payments) – Principal | (924023) |  |  | (1207) |  | (36254) | (9795) | (971279) |
| &nbsp;&nbsp;&nbsp;&nbsp;Write-offs (payments) – financial charges | (448813) | (159609) |  | (95) |  | (13142) | (5578) | (627237) |
| **Balance on March 31, 2026** | **15032278** | **3015494** | **1057507** | **2467** | **281959** | **365685** | **115019** | **19870409** |

---

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

21. DEFERRED REVENUE

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| Contractual Liabilities (customer contracts)<sup>(1)</sup> | 813908 | 771870 | 1110463 | 1078029 |
| Disposal of PP&E<sup>(2)</sup> | 54716 | 56121 | 55257 | 56130 |
| Government grants | 881 | 1180 | 881 | 1180 |
| Software licenses (resale)<sup>(3)</sup> |  |  | 244505 | 159506 |
| Other | 7818 | 7828 | 7809 | 7820 |
| **Total** | **877323** | **836999** | **1418915** | **1302665** |
| Current | 739317 | 711283 | 1182081 | 1076293 |
| Non-current | 138006 | 125716 | 236834 | 226372 |

---

(1) Refers to the balance of contractual liabilities of customers, deferred until performance obligations
are satisfied.

(2) Includes the net balances of the residual values from sale of non-strategic towers and rooftops, transferred
to income as the conditions for recognition are met.

(3) The consolidated amounts include the resale of software licenses from the indirect subsidiary TIS.

22. OTHER LIABILITIES

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| Return of capital to shareholders payable, net of IRRF(Note 23)<sup>(1)</sup> | 91093 | 91093 | 91093 | 91093 |
| Reverse split and share split (Note 23)<sup>(2)</sup> | 824443 | 824723 | 824443 | 824723 |
| Surplus from post-employment benefit plans (Note 30) | 792672 | 777083 | 802408 | 786546 |
| Liabilities payable to ANATEL<sup>(3)</sup> | 1032988 | 995457 | 1032988 | 995457 |
| Third-party withholdings<sup>(4)</sup> | 240642 | 205231 | 261722 | 229176 |
| Liabilities with related parties (Note 28) | 140459 | 146536 | 132069 | 138628 |
| Amounts to be refunded to customers | 92994 | 103230 | 99170 | 108166 |
| Other liabilities | 129648 | 105111 | 130715 | 106476 |
| **Total** | **3344939** | **3248464** | **3374608** | **3280265** |
| Current | 1557454 | 1508894 | 1577568 | 1531414 |
| Non-current | 1787485 | 1739570 | 1797040 | 1748851 |

---

(1) Refers to the Company's capital reduction processes (note 23.a.).

(2) Refers to the Company's share consolidation and stock split (note 23.a.).

(3) Includes amounts related to the cost of renewing STFC and SMP licenses.

(4) Refers to withholdings on payroll and taxes withheld at source on interest on equity and on the provision
of services.

23. EQUITY

**23. a. Capital**

Pursuant to Law No. 6,404 of December 15, 1976 ("Corporation Law"), Article 166, item IV) – capital may only be increased by an Extraordinary Shareholders' Meeting Resolution by modifying the Articles of Incorporation, if the authorized capital increase limit has been reached.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

The shareholders will have preemptive rights to subscribe to a capital increase, in proportion to their number of shares. By resolution of the Board of Directors, the preemptive right in the issuance of shares, convertible debentures and subscription bonus, by placement through sale on the Stock Exchange or public subscription, exchange for shares in a public offer for acquisition may be excluded control, under the terms of articles 257 and 253 of the Corporation Law, as well as enjoy tax incentives, under the terms of special legislation, as provided for in article 172 of the Corporation Law.

*23.a.1) Return of Capital to Shareholders*

The information regarding the Company's capital reductions, which occurred and became effective on April 4, 2024 (R$1,500,000) and February 17, 2025 (R$2,000,000), is the same as in explanatory note <u>24.a.1) Company Capital Reduction</u>, disclosed in the financial statements for the fiscal year ended December 31, 2025.

Of the capital reductions mentioned above, as of the closing date of these individual and consolidated ITRs, the Company had already paid R$3,408,907 to the identified shareholders, with the remaining amount of R$91,093 remaining to be available to these shareholders for the limitation period.

With respect to the material fact disclosed on December 9, 2025, the Company had informed its shareholders and the market in general that, on March 12, 2026, the Company's Extraordinary General Meeting ("EGM") approved the proposal to reduce the Company's share capital by R$4,000,000, without canceling any shares by returning capital, pursuant to Article 173 of the Brazilian Corporations Law, maintaining unchanged the number of shares issued and the percentage of shareholder participation in the Company's share capital ("Reduction"). Consequently, the Company's share capital is reduced from R$60,071,416 to R$56,071,416.

The Reduction is effected by a return of capital to shareholders, in Brazilian currency, at an amount corresponding to R$1.25171862845 per common share issued by the Company, considering a total of 3,195,606,352 common shares into which its share capital is divided, excluding the 30,940,270 shares held in treasury on December 31, 2025.

The value per common share was calculated based on the shareholding position on December 31, 2025, and, due to the Company's share buyback program, this value may change considering the Company's shareholding base to be verified on May 22, 2026, after which date, the shares issued by the Company will be considered ex-rights of the refund.

The Reduction will become effective after 60 days have elapsed from the publication of the minutes of the aforementioned Extraordinary General Meeting, pursuant to Article 174 of the Brazilian Corporations Law.

The proceeds from the Reduction will be paid in a single installment on July 14, 2026, as determined by the Company's Board of Directors, individually to each shareholder and in proportion to their respective shareholdings in the Company's share capital.

*23.a.2) Split and reverse split of the Company's shares*

The information regarding the Company's Share Grouping and Split, which occurred on April 15, 2025 and May 19, 2025, respectively, is the same as that in explanatory note <u>24.a.2) Share Grouping and Split</u>, disclosed in the financial statements for the fiscal year ended December 31, 2025.

For the share grouping (reverse split) and Split, date of these individual and consolidated ITRs, the Company had already paid R$124,911 to the identified fractional shareholders, leaving R$824,443 available to unidentified holders or those with incomplete registration data. These amounts are not inflation indexed adjustment.

*Composition of the Company's Capital*

The subscribed and paid-in share capital was R$60,071,416 on March 31, 2026 and December 31, 2025, represented by shares, book-entry and with no par value, distributed as follows:

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **03.31.2026** | **03.31.2026** | **12.31.2025** | **12.31.2025** |
| <br>**Shareholders** | **Number** | **%** | **Number** | **%** |
| **Controlling Group** | **2488480640** | **77.13%** | **2488480640** | **77.13%** |
| &nbsp;&nbsp;&nbsp;Telefónica | 1268797680 | 39.33% | 1268797680 | 39.33% |
| &nbsp;&nbsp;&nbsp;Telefónica Latinoamérica Holding | 1219682960 | 37.80% | 1217810000 | 37.74% |
| &nbsp;&nbsp;&nbsp;Telefónica Chile |  | — % | 1872960 | 0.06% |
| **Other shareholders** | **707125712** | **21.91%** | **707125712** | **21.91%** |
| **Treasury Shares** | **30940270** | **0.96%** | **30940270** | **0.96%** |
| **Total shares** | **3226546622** | **100.00%** | **3226546622** | **100.00%** |
| &nbsp;&nbsp;&nbsp;Treasury Shares | (30940270) |  | (30940270) |  |
| **Total shares outstanding** | **3195606352** |  | **3195606352** |  |
| **Book value per outstanding share:** |  |  |  |  |
| &nbsp;&nbsp;&nbsp;On 03/31/2026 |  |  |  | R$21.75 |
| &nbsp;&nbsp;&nbsp;On 12/31/2025 |  |  |  | R$21.51 |

---

On February 24, 2026, Telefónica Latinoamérica Holding acquired the shareholding that Telefónica Chile held in the Company.

**23. b. Company's share buyback program**

On February 20, 2026, the Company's Board of Directors approved: (i) the termination, on February 20, 2026, of the previously existing share buyback program (which had been approved by the Board of Directors at a meeting held on February 25, 2025). During the term of said program, 49,613,856 common shares issued by the Company were acquired, of which 34,740,770 were cancelled on July 24, 2025, with the remainder being able to be held in treasury, cancelled or sold; and (ii) the creation of a new share buyback program for the years 2026 and 2027.

The Company's new share buyback program, approved on February 20, 2026, aims to acquire common shares issued by the Company for maintenance in treasury, subsequent cancellation or sale, without reducing the share capital, in order to increase shareholder value through the efficient application of available cash resources, optimizing the Company's capital allocation.

The shares in the buyback program are to be acquired with resources available in the statutory profit reserve plus net income of the current year, pursuant to article 8, § 1, items I and II of CVM Resolution No. 77/2022. The maximum amount to be used in the program is R$1 billion.

This program began on February 23, 2026 and will end on February 22, 2027.

In the period ended March 31, 2026, the Company did not repurchase any common shares.

**23. c. Capital reserves**

The information on capital reserves is the same as in Note <u>24) Equity, item c</u>, disclosed in the financial statements for the year ended December 31, 2025.

The balances were R$(110,078) on March 31, 2026 and December 31, 2025.

**23. d. Income reserves**

The information on income reserves is the same as in <u>Note 24) Equity, item d</u>, disclosed in the financial statements for the year ended December 31, 2025, except to tax incentive reserves of R$-7,382.

The balances were R$8,742,734 and R$8,735,352 on March 31, 2026 and December 31, 2025, respectively.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

 **23. e. Dividend and interest on equity**

The amounts of interest on own capital per share are calculated and presented net of withholding income tax. Tax immune shareholders received interest, without deductions for withholding income tax.

23. e.1. Interim interest on equity for 2026

At meetings of the Company's Board of Directors, interest on equity was declared, pursuant to article 26 of the Company's Articles of Association, article 9 of Law No. 9,249/1995 and CVM Resolution No. 143/2022. As provided for in article 26 of the Company's Articles of Association, the interest distributions comprise part of the mandatory dividend for the year ending December, 31, 2026, subject to ratification by the Shareholders' General Meeting to be held in 2027, as follows:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Dates** | **Dates** | **Dates** | | | |
| **Approval** | **Credit** | **Payment limit** | <br>**Gross Amount** | <br>**Net Value** | <br>**Amount per Share, Net** |
| 12.02.2026 | 23.02.2026 | 30.04.2027 | 325000 | 268125 | 0.08390426431 |
| 13.03.2026 | 25.03.2026 | 30.04.2027 | 200000 | 165000 | 0.05163339342 |
| **Total** | **Total** | **Total** | **525000** | **433125** |  |

---

The net values shown in the table above consider the standard rate of 17.5%, and may be subject to change due to international treaties, tax immunities and exemptions, countries with preferential tax regimes, and privileged tax regimes.

23. e.2. Interest on Equity for 2025

Details are disclosed in Note <u>24) Equity, item e.1)</u>, disclosed in the financial statements for the year ended December 31, 2025.

On February 23, 2026, the Company informed shareholders that its Statutory Board resolved to set the date of April 14, 2026, for the payment of the JSCP (Interest on Equity) that were declared in 2025, as follows:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Dates** | **Dates** | | | |
| **Approval** | **Credit** | <br>**Gross Amount** | <br>**Net Value** | <br>**Amount per Share, Net** |
| 01.04.2025 | 11.04.2025 | 240000 | 204000 | 0.06296133934 |
| 12.05.2025 | 22.05.2025 | 500000 | 425000 | 0.13116945695 |
| 12.06.2025 | 23.06.2025 | 200000 | 170000 | 0.05264314492 |
| 14.07.2025 | 25.07.2025 | 330000 | 280500 | 0.08715426995 |
| 14.08.2025 | 25.08.2025 | 250000 | 212500 | 0.06624319750 |
| 11.09.2025 | 22.09.2025 | 400000 | 340000 | 0.10608541339 |
| 14.10.2025 | 27.10.2025 | 380000 | 323000 | 0.10078114272 |
| 13.11.2025 | 24.11.2025 | 340000 | 289000 | 0.09035622247 |
| 16.12.2025 | 29.12.2025 | 350000 | 297500 | 0.09309657299 |
| **Total** | **Total** | **2990000** | **2541500** |  |

---

The net values shown in the table above consider the standard rate of 15.0%, and may be subject to change due to international treaties, tax immunities and exemptions, countries with preferential tax regimes, and privileged tax regimes.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

The information regarding the per-share values related to the declared JSCP (Interest on Equity) as of April 1, 2025 (table above), corresponds to the total net value per share considering the pro-forma effects of the Share Consolidation and Split of the Company's shares carried out on April 15, 2025. The Company emphasizes that the information presented reflects the effects of the Share Consolidation and Split and is merely illustrative and informative, aiming to provide greater clarity and accessibility to the information made available to shareholders considering the Company's current shareholding structure, as well as to facilitate comparability with information from previous years. Therefore, this information does not alter or impact previously disclosed communications regarding results or dividends. The net value per share of the declared JSCP as of April 1, 2025 was R$0.12592267868, without considering the pro-forma effects of the Share Consolidation and Split.

At the Annual General Meeting held on April 16, 2026, the administrators' accounts were approved, and the Financial Statements, accompanied by the Management Report, the Independent Auditors' Report, the Audit and Control Committee's Opinion, the Fiscal Council's Opinion, and the proposal for the allocation of results, relating to the fiscal year ended December 31, 2025, were examined, discussed, and voted on.

**23. f. Equity valuation adjustment**

 ****

The changes in equity valuation adjustments, net of gains or losses and of taxes, when applicable, were as follows:

<u>Currency translation adjustments for foreign investees:</u> Refers to cumulative translation adjustments from the translation of financial statements of Aliança (joint venture).

<u>Financial assets at fair value through other comprehensive income:</u> Refers to changes in the fair value of equity instruments (shares).

<u>Derivative financial instruments:</u> Refer to the effective part of cash flow hedges up to the balance sheet date.

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company / Consolidated** | **Company / Consolidated** | **Company / Consolidated** | **Company / Consolidated** |
|  | **Currency translation adjustments foreign** | **Financial assets at fair value** | **Derivative transactions** | **Total** |
| **Balance on December 31, 2024** | **81142** | **(9287)** | **—** | **71855** |
| Translation losses | (5073) |  |  | (5073) |
| Losses from derivatives |  |  | (213) | (213) |
| Losses on financial assets at fair value |  | (4) |  | (4) |
| **Balance on March 31, 2025** | **76069** | **(9291)** | **(213)** | **66565** |
| Translation gains | 5886 |  |  | 5886 |
| Losses from derivatives |  |  | (47382) | (47382) |
| Losses on financial assets at fair value |  | (16) |  | (16) |
| **Balance on December 31, 2025** | **81955** | **(9307)** | **(47595)** | **25053** |
| Translation losses | (11012) |  |  | (11012) |
| Gains from derivatives |  |  | 53148 | 53148 |
| **Balance on March 31, 2026** | **70943** | **(9307)** | **5553** | **67189** |

---

The schedule below delineates the consolidated movements of comprehensive income, along with the corresponding adjustments to the Balance Sheet and Income Statement line items:

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  |  | **Currency translation effects – foreign investments** | **Financial assets at fair value** | **Derivative transactions** | **Total** |
| **Balances as of December 31, 2025** |  | **81955** | **(9307)** | **(47595)** | **25053** |
| Losses on the conversion of investments in a jointly controlled company located abroad. | Investments - Balance sheet | (11012) |  |  | (11012) |
| Fair value effects | Derivatives transactions - Balance sheet |  |  | 73789 | 73789 |
| Covered instrument lows | Derivatives trading - Operating result |  |  | 6738 | 6738 |
| Deferred income and social contribution taxes | Deferred income and social contribution taxes - Balance Sheet |  |  | (27379) | (27379) |
| **Balances as of March 31, 2026** |  | **70943** | **(9307)** | **5553** | **67189** |

---

**23. g. Non-controlling shareholders**

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **FiBrasil** | **Vivo Ventures** | **CloudCo Brasil** | **Total** |
| **Equity on December 31, 2025** | **1434482** | **249642** | **150355** | **1834479** |
| &nbsp;&nbsp;&nbsp;Company | 1233653 | 244649 | 75194 | 1553496 |
| &nbsp;&nbsp;&nbsp;Non-controlling shareholders | 200829 | 4993 | 75161 | 280983 |
| **Capital contributions in equity in the period** | **—** | **4194** | **—** | **4194** |
| &nbsp;&nbsp;&nbsp;Company |  | 4110 |  | 4110 |
| &nbsp;&nbsp;&nbsp;Non-controlling shareholders |  | 84 |  | 84 |
| **Statements of income movements in the period** | **(9040)** | **(982)** | **(4507)** | **(14529)** |
| &nbsp;&nbsp;&nbsp;Company | (6780) | (963) | (2254) | (9997) |
| &nbsp;&nbsp;&nbsp;Non-controlling shareholders | (2260) | (19) | (2253) | (4532) |
| **Equity on March 31, 2026** | **1425442** | **252854** | **145848** | **1824144** |
| &nbsp;&nbsp;&nbsp;Company | 1226873 | 247796 | 72940 | 1547609 |
| &nbsp;&nbsp;&nbsp;Non-controlling shareholders | 198569 | 5058 | 72908 | 276535 |

---

**23. h. Reconciliation of individual parent company and consolidated net income**

---

| | | |
|:---|:---|:---|
|  | **Three-month period ended** | **Three-month period ended** |
|  | **03.31.2026** | **03.31.2025** |
| **Company's net income (Company)** | **1261083** | **1058212** |
| &nbsp;&nbsp;&nbsp;**Participation of non-controlling shareholders** | **(4532)** | **(1942)** |
| &nbsp;&nbsp;&nbsp;&nbsp;IoTCo Brasil |  | 1066 |
| &nbsp;&nbsp;&nbsp;&nbsp;FiBrasil | (2260) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Vivo Ventures | (19) | 117 |
| &nbsp;&nbsp;&nbsp;&nbsp;CloudCo Brasil | (2253) | (3125) |
| **Company's net income (Consolidated)** | **1256551** | **1056270** |

---

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

 **23. i. Earnings per share**

Basic and diluted earnings per share were calculated by dividing net income attributed to the Company's shareholders by the weighted average number of outstanding common shares. The Company has no instruments which might potentially affect the dilution of earnings per share.

---

| | | |
|:---|:---|:---|
|  | **Company** | **Company** |
|  | **Three-month period ended** | **Three-month period ended** |
|  | **03.31.2026** | **03.31.2025** |
| Net income for the period | 1261083 | 1058212 |
| Weighted average number of outstanding common shares for the period (in thousands) | 3195606 | 3244868 |
| Basic and diluted earnings per common share (R$) | 0.39 | 0.33 |

---

In accordance with accounting standard IAS 33 / CPC 41 – Earnings per share, if the number of common shares increases as a result of a stock split or decreases as a result of a reverse stock split, the calculation of basic and diluted earnings per share for all periods presented must be adjusted retrospectively. In this context, the weighted average number of shares outstanding and the basic and diluted earnings per share outstanding for the comparative period (March 31, 2025), originally presented as 1,622,434 and R$0.65, respectively, are being restated for the application of the retrospective adjustments of the assumptions of the reverse stock split and reverse stock split processes described in note 23.a.2).

24. NET OPERATING REVENUE

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** |
|  | **03.31.2026** | **03.31.2025** | **03.31.2026** | **03.31.2025** |
| **Gross operating revenue** | **20769947** | **19100246** | **21672196** | **19809263** |
| Services<sup>(1)</sup> | 18534708 | 17196553 | 19343347 | 17867162 |
| Sale of goods<sup>(2)</sup> | 2235239 | 1903693 | 2328849 | 1942101 |
| **Deductions from gross operating revenue** | **(6068008)** | **(5340320)** | **(6215181)** | **(5418990)** |
| **Tax** | **(2896641)** | **(2740624)** | **(3040541)** | **(2821503)** |
| &nbsp;&nbsp;Services | (2472682) | (2388076) | (2599647) | (2454344) |
| &nbsp;&nbsp;Sale of goods | (423959) | (352548) | (440894) | (367159) |
| **Discounts granted and return of goods** | **(3171367)** | **(2599696)** | **(3174640)** | **(2597487)** |
| &nbsp;&nbsp;Services | (2604703) | (2034016) | (2604742) | (2034016) |
| &nbsp;&nbsp;Sale of goods | (566664) | (565680) | (569898) | (563471) |
| **Net operating revenue** | **14701939** | **13759926** | **15457015** | **14390273** |
| **Services** | **13457323** | **12774461** | **14138958** | **13378802** |
| **Sale of goods** | **1244616** | **985465** | **1318057** | **1011471** |

---

(1) Includes telephone services, use of interconnection network, data and SVA services, cable TV and other
services.

(2) Includes sale of goods (handsets, SIM cards and accessories) and equipment of "Vivo Tech".

No customer contributed more than 10% of operating revenue for the quarters ended March 31, 2026 and 2025.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

25. OPERATING COSTS AND EXPENSES

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** | **Company** |
|  | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** |
|  | **03.31.2026** | **03.31.2026** | **03.31.2026** | **03.31.2026** | **03.31.2025** | **03.31.2025** | **03.31.2025** | **03.31.2025** |
|  | **Cost of sales and services** | **Selling expenses** | **General and administrative expenses** | **Total** | **Cost of sales and services** | **Selling expenses** | **General and administrative expenses** | **Total** |
| Third-party services | (2336885) | (1788077) | (302728) | (4427690) | (2365344) | (1615577) | (266753) | (4247674) |
| Depreciation and amortization | (3151313) | (432417) | (217128) | (3800858) | (3066475) | (424558) | (215023) | (3706056) |
| Personnel | (275120) | (848564) | (384126) | (1507810) | (270967) | (859319) | (292429) | (1422715) |
| Cost of goods sold | (1252265) |  |  | (1252265) | (1039635) |  |  | (1039635) |
| Taxes, charges and contributions | (503569) | (10318) | (12044) | (525931) | (513034) | (8867) | (15366) | (537267) |
| Allowance for expected losses on accounts receivable (Note 5) |  | (399805) |  | (399805) |  | (342360) |  | (342360) |
| Rental, insurance, condominium and connection means | (411170) | (18509) | (12310) | (441989) | (293144) | (19712) | (11793) | (324649) |
| Materials and other operating costs and expenses | (22122) | (47783) | (11501) | (81406) | (20587) | (43482) | (16305) | (80374) |
| **Total** | **(7952444)** | **(3545473)** | **(939837)** | **(12437754)** | **(7569186)** | **(3313875)** | **(817669)** | **(11700730)** |

---

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** |
|  | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** |
|  | **03.31.2026** | **03.31.2026** | **03.31.2026** | **03.31.2026** | **03.31.2025** | **03.31.2025** | **03.31.2025** | **03.31.2025** |
|  | **Cost of sales and services** | **Selling expenses** | **General and administrative expenses** | **Total** | **Cost of sales and services** | **Selling expenses** | **General and administrative expenses** | **Total** |
| Third-party services | (2798007) | (1771515) | (315728) | (4885250) | (2726035) | (1615119) | (284878) | (4626032) |
| Depreciation and amortization<sup>(1)</sup> | (3224249) | (434683) | (224883) | (3883815) | (3070452) | (428003) | (216521) | (3714976) |
| Personnel | (358139) | (881671) | (427710) | (1667520) | (343678) | (880352) | (323644) | (1547674) |
| Cost of goods sold | (1278913) |  |  | (1278913) | (1065547) |  |  | (1065547) |
| Taxes, charges and contributions | (530557) | (11151) | (11973) | (553681) | (515512) | (8868) | (16294) | (540674) |
| Allowance for expected losses on accounts receivable (Note 5) |  | (434614) |  | (434614) |  | (384057) |  | (384057) |
| Rental, insurance, condominium and connection means<sup>(2)</sup> | (302164) | (17222) | (14560) | (333946) | (293167) | (19106) | (12877) | (325150) |
| Materials and other operating costs and expenses | (22483) | (40319) | (11915) | (74717) | (21491) | (43165) | (17156) | (81812) |
| **Total** | **(8514512)** | **(3591175)** | **(1006769)** | **(13112456)** | **(8035882)** | **(3378670)** | **(871370)** | **(12285922)** |

---

(1) Includes consolidated lease depreciation of R$962,139 and R$913,454 for the quarters ended March 31, 2026
and 2025, respectively (Note 13.c).

(2) Includes costs and expenses for renting infrastructure, real estate, equipment, vehicles, insurance and
means of connection. In addition to small-value leases of R$1,112 and R$1,208, for the quarters ended March 31, 2026 and 2025.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

26. OTHER INCOME (EXPENSES), NET

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** |
|  | **03.31.2026** | **03.31.2025** | **03.31.2026** | **03.31.2025** |
| Recovered expenses and fines | 151072 | 128691 | 152033 | 129155 |
| Provisions for legal claims (Note 19) | (168688) | (182304) | (168903) | (182220) |
| Other operating income (expenses)<sup>(1)</sup> | (590) | (64281) | (2178) | (62614) |
| **Total** | **(18206)** | **(117894)** | **(19048)** | **(115679)** |
| Other operating income | 151072 | 128691 | 152033 | 129155 |
| Other operating expenses | (169278) | (246585) | (171081) | (244834) |
| **Total** | **(18206)** | **(117894)** | **(19048)** | **(115679)** |

---

(1) The 2026 figures include a net gain of R$86.322 from the sale of copper, resulting from the ongoing process
of replacing the Company's copper cable network with a fiber optic network, made possible by the migration from the STFC concession regime
to the private STFC authorization regime, completed on April 11, 2025.

27. FINANCIAL INCOME (EXPENSES), NET

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Company** | **Consolidated** | **Consolidated** |
|  | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** |
|  | **03.31.2026** | **03.31.2025** | **03.31.2026** | **03.31.2025** |
| **Financial Income** |  |  |  |  |
| Gain on derivative transactions (Note 31) | 60417 | 55902 | 81053 | 58576 |
| Interest income | 231874 | 201675 | 251377 | 214895 |
| Foreign exchange and monetary variation gains | 56095 | 77481 | 71699 | 80668 |
| Foreign exchange gains on loans and financing (Note 20) |  |  | 3496 | 1642 |
| Interest (customers, taxes and other) | 34061 | 80722 | 32817 | 79961 |
| Other financial income | 40602 | 87658 | 38033 | 88407 |
| **Total** | **423049** | **503438** | **478475** | **524149** |
| **Financial Expenses** |  |  |  |  |
| Charges for financing, debentures and leases (Note 20)<sup>(1)</sup> | (553824) | (566454) | (601038) | (576549) |
| Provisions for legal claims (Note 19) | (153505) | (166866) | (155305) | (169506) |
| Loss on derivative transactions (Note 31) | (101334) | (89004) | (142115) | (100482) |
| Interest (financial institutions, trade accounts payable, taxes and other) | (231486) | (169690) | (231161) | (170198) |
| Foreign exchange and monetary variation losses (suppliers, taxes and others) | (15322) | (30005) | (20012) | (29792) |
| Other financial expenses | (45235) | (44922) | (49319) | (46820) |
| **Total** | **(1100706)** | **(1066941)** | **(1198950)** | **(1093347)** |
| **Financial income (expenses), net** | **(677657)** | **(563503)** | **(720475)** | **(569198)** |

---

(1) Includes consolidated R$447,558 e R$413,878 for the three-month
period ended March 31, 2026 and 2025, respectively, referring to lease charges (Note 20.c).

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

28. BALANCES AND TRANSACTIONS WITH RELATED PARTIES

**28. a. Balances and transactions with related parties**

The main balances of assets and liabilities with related parties arise from transactions with member companies of the controlling group, which were carried out at prices and other commercial conditions as agreed in a contract between the parties and refer to:

&nbsp;&nbsp;&nbsp;&nbsp;a) Fixed and mobile telephony services provided to Telefónica Group companies.

&nbsp;&nbsp;&nbsp;&nbsp;b) Factoring operations, a financing line for services provided by Telefónica Group suppliers.

&nbsp;&nbsp;&nbsp;&nbsp;c) Contracts for the assignment of rights to use duct networks, duct leasing services for fiber optics, and
contracts for the occupation of right-of-way with various highway concessionaires.

&nbsp;&nbsp;&nbsp;&nbsp;d) Shared services, passed on at the cost actually incurred.

&nbsp;&nbsp;&nbsp;&nbsp;e) Right to use certain software licenses and contracted maintenance and support services.

&nbsp;&nbsp;&nbsp;&nbsp;f) International transmission infrastructure for various data circuits and contracted connection services.

&nbsp;&nbsp;&nbsp;&nbsp;g) Acquire Sourcing Platform, an online solution for negotiating the purchase and sale of various types of
goods and services.

&nbsp;&nbsp;&nbsp;&nbsp;h) Cost Sharing Agreement, reimbursement of expenses related to the digital business.

&nbsp;&nbsp;&nbsp;&nbsp;i) Financial Clearing House Roaming, inflow of funds for payments and receipts derived from roaming operations.

&nbsp;&nbsp;&nbsp;&nbsp;j) Data communication services and integrated solutions.

&nbsp;&nbsp;&nbsp;&nbsp;k) Long-distance calling and international roaming services

&nbsp;&nbsp;&nbsp;&nbsp;l) Sale of assets.

&nbsp;&nbsp;&nbsp;&nbsp;m) Brand Fee for the assignment of trademark rights.

&nbsp;&nbsp;&nbsp;&nbsp;n) Rental of buildings, data circuits or infrastructure.

The Company and its subsidiaries sponsor pension plans and other post-employment benefits for their employees with Visão Prev and Sistel (Note 30.).

Telefônica Corretora de Seguros ("TCS") is an insurance broker for the Company and its subsidiaries for insurance of cell phones, operational risks, general liability, guarantee insurance, among others. There are no outstanding balances between TCS and the Company and its subsidiaries.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

The following table summarizes the consolidated balances with related parties:

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| | | **Balance Sheet – Assets** | **Balance Sheet – Assets** | **Balance Sheet – Assets** | **Balance Sheet – Assets** | **Balance Sheet – Assets** | **Balance Sheet – Assets** |
| | | **03.31.2026** | **03.31.2026** | **03.31.2026** | **12.31.2025** | **12.31.2025** | **12.31.2025** |
| <br>**Companies** | <br>**Type of transaction** | **Cash and cash equivalents** | **Accounts receivable** | **Other assets** | **Cash and cash equivalents** | **Accounts receivable** | **Other assets** |
| **Parent Companies** |  |  |  |  |  |  |  |
| Telefónica Móviles Chile, S.A. | k) |  |  |  |  | 1647 |  |
| Telefónica Latinoamérica Holding, S.L. | d) |  |  | 2669 |  |  | 2199 |
| Telefónica, S.A. | d) |  | 4369 | 108 |  | 4369 | 111 |
|  |  | **—** | **4369** | **2777** | **—** | **6016** | **2310** |
| **Other Group companies** |  |  |  |  |  |  |  |
| Telefónica Global Solutions Participações, Ltda | a) / d) / e) / f) / j) / n) |  | 1135 | 156 |  | 1430 | 354 |
| Telefónica Venezolana, C.A. | d) / k) |  |  | 4941 |  | 10537 | 5197 |
| Telefónica Global Solutions, S.L.U. | f) / k) |  | 20288 |  |  | 23441 |  |
| Telefónica Innovación Digital, S.L. | d) |  |  | 11147 |  |  | 9608 |
| Telefónica Serviços Empresariais do Brasil Ltda | d) |  |  | 834 |  |  | 669 |
| Telfisa Global B.V. | i) | 9082 |  |  | 16694 |  |  |
| Telxius Cable Brasil Ltda | a) / d) / e) / f) |  | 6043 | 328 |  | 2539 | 321 |
| Wayra Brasil Desenvolvedora e Apoiadora de Projetos Ltda | d) |  |  | 916 |  |  | 1037 |
| Celular De Telefonia SA de CV | d) |  |  | 2510 |  |  | 2582 |
| Telefónica IoT & Big Data Tech, S.A. | d) |  |  | 2014 |  |  | 1598 |
| Telefónica Hispanoamérica, S.A. | d) |  |  | 2041 |  |  | 2077 |
| Other |  |  | 2749 | 2734 |  | 5155 | 718 |
|  |  | **9082** | **31689** | **27621** | **16694** | **44276** | **24161** |
| **Total** |  | **9082** | **36058** | **30398** | **16694** | **50292** | **26471** |
| **Current assets** |  |  |  |  |  |  |  |
| Cash and cash equivalents (Note 3) |  | 9082 |  |  | 16694 |  |  |
| Trade accounts receivable (Note 5) |  |  | 36058 |  |  | 50292 |  |
| Other assets (Note 11) |  |  |  | 30241 |  |  | 26317 |
| **Non-current assets** |  |  |  |  |  |  |  |
| Other assets (Note 11) |  |  |  | 157 |  |  | 154 |

---

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | | **Balance Sheet – Liabilities** | **Balance Sheet – Liabilities** | **Balance Sheet – Liabilities** | **Balance Sheet – Liabilities** |
| | | **03.31.2026** | **03.31.2026** | **12.31.2025** | **12.31.2025** |
| <br>**Companies** | <br>**Type of transaction** | **Trade accounts payable** | **Other liabilities and leases** | **Trade accounts payable** | **Other liabilities and leases** |
| **Parent Companies** |  |  |  |  |  |
| Telefónica Móviles Chile, S.A. | k) |  |  | 900 |  |
| Telefónica Latinoamérica Holding, S.L. | d) | 394 |  |  | 1205 |
| Telefónica, S.A. | d) / e) / m) | 9493 | 119291 | 11490 | 124541 |
|  |  | **9887** | **119291** | **12390** | **125746** |
| **Other Group companies** |  |  |  |  |  |
| Telefónica Global Solutions Participações, Ltda | d) / e) / f) / k) | 54221 | 318 | 60099 | 318 |
| Telefónica Compras Electrónicas, S.L. | g) | 39312 |  | 31253 |  |
| Telefónica Innovación Digital, S.L. | h) | 62177 |  | 38503 |  |
| Telefónica Venezolana, C.A. | d) / k) | 102 | 1653 | 11037 | 1742 |
| Telefónica Global Solutions, S.L.U. | e) / f) / j) / k) | 32932 |  | 54769 |  |
| Telxius Cable Brasil Ltda | d) / f) / l) | 21203 | 10354 | 44993 | 10354 |
| Companhia AIX Participações Ltda | c) |  | 55923 | 2867 | 60481 |
| Telefónica IoT & Big Data Tech, S.A. | h) | 44655 |  | 33477 |  |
| Telefónica Global Technology S.A. | e) | 19366 |  | 1750 |  |
| Other |  | 27804 | 454 | 28613 | 468 |
|  |  | **301772** | **68702** | **307361** | **73363** |
| **Total** |  | **311659** | **187993** | **319751** | **199109** |
| **Current liabilities** |  |  |  |  |  |
| Trade accounts payable and other payables (Note 16) |  | 311659 |  | 319751 |  |
| Leases (Note 20) |  |  | 29001 |  | 25608 |
| Other liabilities (Note 22) |  |  | 131482 |  | 138026 |
| **Non-current liabilities** |  |  |  |  |  |
| Leases (Note 20) |  |  | 26923 |  | 34873 |
| Other liabilities (Note 22) |  |  | 587 |  | 602 |

---

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| | | **Statement of income** | **Statement of income** | **Statement of income** | **Statement of income** | **Statement of income** | **Statement of income** |
| | | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** | **Three-month period ended** |
| | | **03.31.2026** | **03.31.2026** | **03.31.2026** | **03.31.2025** | **03.31.2025** | **03.31.2025** |
| <br>**Companies** | <br>**Type of transaction** | **Operating revenues** | **Revenues (cost, expenses and other expenses) operating** | **Financial result** | **Operating revenues** | **Revenues (cost, expenses and other expenses) operating** | **Financial result** |
| **Parent Companies** |  |  |  |  |  |  |  |
| Telefónica Móviles Chile, S.A. | k) |  |  |  | 1174 | (884) |  |
| Telefónica Latinoamérica Holding, S.L. | d) |  | 131 | (15) |  | 130 | 190 |
| Telefónica, S.A. | d) / e) / m) |  | (140370) | 7577 |  | (134940) | 14923 |
|  |  | **—** | **(140239)** | **7562** | **1174** | **(135694)** | **15113** |
| **Other Group companies** |  |  |  |  |  |  |  |
| Telefónica Global Solutions Participações, Ltda | a) / d) / e) / f) / k) / j) / n) | 1658 | (18569) |  | 1618 | (11827) |  |
| Telefónica Compras Electrónicas, S.L. | g) |  | (10159) |  |  | (11591) |  |
| Telefónica Innovación Digital, S.L. | d) / e) / h) |  | (59217) | 3795 |  | (58250) | 2141 |
| Telefônica factoring do Brasil Ltda | b) / d) | 3 | 976 |  | 3 | (2029) | (2331) |
| Telefónica Global Technology | e) |  | (15497) | 39 |  | (17390) | 103 |
| Telefónica Global Solutions, S.L.U. | e) / f) / j) / k) | 6937 | (19239) | (289) | 8000 | (14649) | (206) |
| Telxius Cable Brasil Ltda | a) / d) / e) / f) / l) | 3390 | (31868) | 2350 | 2189 | (69758) | (661) |
| Telefônica Cibersegurança e Tecnologia do Brasil Ltda | a) / d) / e) / n) |  |  |  | 347 | (63410) |  |
| Companhia AIX Participações Ltda | a) / c) | 15 |  | (1751) | 64 |  | (2508) |
| Telefónica IoT & Big Data Tech, S.A. | d) / h) |  | (34138) | 2017 |  | (32303) | 3819 |
| FiBrasil Infraestrutura e Fibra Ótica S.A. | a) / c) / d) / e) / f) / j) / n) |  |  |  | 3401 | (102411) | 2325 |
| Telefónica Móviles Argentina, S.A. | k) |  |  |  | 4226 | (2603) | 482 |
| Telefónica Venezolana, C.A. | d) / k) | 1 | (25) | 2475 | 1 | (30) | (268) |
| Other |  | 823 | (14077) | (2) | 1793 | (16966) | 705 |
|  |  | **12827** | **(201813)** | **8634** | **21642** | **(403217)** | **3601** |
| **Total** |  | **12827** | **(342052)** | **16196** | **22816** | **(538911)** | **18714** |

---

**28. b. Management compensation**

Consolidated key management compensation paid by the Company to its Board of Directors and Statutory Officers for the three-month period ended March 31, 2026 and 2025 totaled R$22,520 and R$25,166, respectively. This includes R$11,439 (R$14,034 on March 31, 2025) for salaries, benefits and social charges and R$11,081 (R$11,132 on March 31, 2025) for variable compensation.

These amounts were recorded as personnel expenses in General and administrative expenses.

In the three-month period ended March 31, 2026 and 2025, the Directors and Officers received no pension, retirement or similar benefits.

29. SHARE-BASED PAYMENT PLANS

Plan liabilities are recognized at the fair value of the cash-settled transaction. Fair value is measured initially and at each balance sheet date up to and including the settlement date, any change in fair value is recognized as employee benefit expense (Note 25.) in the statement of income. Fair value is recognized as an expense over the period to the acquisition date, with a corresponding liability.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

The Company's parent company, Telefónica offers, different compensation plans based on the quoted value of its shares (Talent for the Future Share Plan ("TFSP") and Performance Share Plan ("PSP"), to directors and employees of its subsidiaries, including the Company and its subsidiaries.

The Company approved incentive plans (Performance Share Plan ("PSP VIVO") via performance units, with cash settlement ("Plan"). Participants in the Plan will be entitled to the grant of a certain number of units representing one share issued by the Company (VIVT3) ("Unit" and "Share"). Each Unit represents the expectation of the right to receive the full value of one Share, which will serve as a basis, taking into account the number of Units received, to determine the value of the incentive to be paid by the Company in cash to participants.

The details of these plans are the same as those disclosed in Note <u>30) Share-Based Compensation Plans</u>, disclosed in the financial statements for the year ended December 31, 2025.

The three-year programs on March 31, 2026 were:

---

| | | |
|:---|:---|:---|
| **Plans** | **Public (Officers and Employees)** | **Company shares potentially receivable** |
| **Talent for the Future Share Plan ("TFSP") - global level** | **Senior Managers, Managers and Specialists** |  |
| Cycle 2023-2025 (January 1, 2023 to December 31, 2025) | 139 active executives | 280050 |
| Cycle 2024-2026 (January 1, 2024 to December 31, 2026) | 136 active executives | 250500 |
| Cycle 2025-2027 (January 1, 2025 to December 31, 2027) | 130 active executives | 233500 |
| **Performance Share Plan ("PSP") – global level** | **Vice Presidents and Directors** |  |
| Cycle 2023-2025 (January 1, 2023 to December 31, 2025) | 89 active executives (including 5 executives appointed pursuant to the Company's Articles of Association) | 868810 |
| Cycle 2024-2026 (January 1, 2024 to December 31, 2026) | 106 active executives (including 5 executives appointed pursuant to the Company's Articles of Association) | 978531 |
| Cycle 2024-2026 (January 1, 2024 to December 31, 2026) | 118 active executives (including 5 executives appointed pursuant to the Company's Articles of Association) | 1005932 |
| **Performance Share Plan ("PSP VIVO") - local level** | **Vice Presidents and Directors** |  |
| Cycle 2023-2025 (January 1, 2023 to December 31, 2025) | 88 active executives (including 5 executives appointed pursuant to the Company's Articles of Association) | 808778 |
| Cycle 2024-2026 (January 1, 2024 to December 31, 2026) | 105 active executives (including 5 executives appointed pursuant to the Company's Articles of Association) | 778830 |
| Cycle 2025-2027 (January 1, 2025 to December 31, 2027) | 117 active executives (including 5 executives appointed pursuant to the Company's Articles of Association) | 1041419 |

---

On March 31, 2026 and December 31, 2025, the consolidated liability balances of the share compensation plans totalled R$150,559 and R$154,736, respectively, including taxes.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

30. PENSION PLANS AND OTHER POST-EMPLOYMENT BENEFITS

The plans sponsored by the Company and its subsidiaries and the related benefits by type are as follows:

---

| | | | |
|:---|:---|:---|:---|
| **Plan** | **Type** | **Entity** | **Sponsor** |
| PBS-A | Defined benefit (DB) | Sistel | Telefônica Brasil, jointly with other telecoms resulting from privatization of the Sistema Telebrás |
| PAMA / PCE | Defined benefit (DB) | Sistel | Telefônica Brasil, jointly with other telecoms resulting from privatization of the Sistema Telebrás |
| Healthcare – Law No. 9656/98 | Defined benefit (DB) | Telefônica Brasil | Telefônica Brasil, Terra Networks, TGLog, TIS, CloudCo Brasil, Cyber anda FiBrasil |
| CTB | Defined benefit (DB) | Telefônica Brasil | Telefônica Brasil |
| Telefônica BD | Defined benefit (DB) | VisãoPrev | Telefônica Brasil |
| VISÃO | Defined contribution (DC) / Hybrid | VisãoPrev | Telefônica Brasil, Terra Networks, TGLog, TIS, CloudCo Brasil, Cyber anda FiBrasil |

---

The details of these plans are the same as in [Note](#Section46) <u>31) Pension Plans and Other Post-Employment Benefits</u>, as disclosed in the financial statements for the year ended December 31, 2025.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

The changes in consolidated movement and balances of the surplus and deficit plans were:

---

| | | | |
|:---|:---|:---|:---|
|  | **Consolidated** | **Consolidated** | **Consolidated** |
|  | **Plans with surplus** | **Plans with deficit** | **Total** |
| **Balance on December 31, 2024** | **157046** | **(728559)** | **(571513)** |
| &nbsp;&nbsp;&nbsp;Current service cost | (238) | (2302) | (2540) |
| &nbsp;&nbsp;&nbsp;Net interest on net defined benefit liabilities/assets | (4248) | (20206) | (24454) |
| &nbsp;&nbsp;&nbsp;Contributions and benefits paid by the employers | 254 | 7961 | 8215 |
| &nbsp;&nbsp;&nbsp;Distribution of surplus – PBS-A Plan (gross amount) | (18508) |  | (18508) |
| **Balance on March 31, 2025** | **134306** | **(743106)** | **(608800)** |
| &nbsp;&nbsp;&nbsp;Current service cost | (724) | 79842 | 79118 |
| &nbsp;&nbsp;&nbsp;Net interest on net defined benefit liabilities/assets | 22256 | (57155) | (34899) |
| &nbsp;&nbsp;&nbsp;Contributions and benefits paid by the employers | 439 | 14109 | 14548 |
| &nbsp;&nbsp;&nbsp;Surplus Distribution – PBS-A Plan (gross amount) | 107077 |  | 107077 |
| &nbsp;&nbsp;&nbsp;Amounts recognized in OCI | (11665) | (79074) | (90739) |
| &nbsp;&nbsp;&nbsp;Business combination - acquisition of FiBrasil |  | (1162) | (1162) |
| **Balance on December 31, 2025** | **182907** | **(786546)** | **(603639)** |
| &nbsp;&nbsp;&nbsp;Current service cost | (203) | (1762) | (1965) |
| &nbsp;&nbsp;&nbsp;Net interest on net defined benefit liabilities/assets | 5111 | (21127) | (16016) |
| &nbsp;&nbsp;&nbsp;Contributions and benefits paid by the employers | 216 | 7027 | 7243 |
| &nbsp;&nbsp;&nbsp;Distribution of reserves | (28313) |  | (28313) |
| **Balance on March 31, 2026** | **159718** | **(802408)** | **(642690)** |
| **Balance on December 31, 2025** |  |  |  |
| &nbsp;&nbsp;&nbsp;Current assets | 85323 |  | 85323 |
| &nbsp;&nbsp;&nbsp;Non-current assets | 97584 |  | 97584 |
| &nbsp;&nbsp;&nbsp;Current liabilities |  | (27325) | (27325) |
| &nbsp;&nbsp;&nbsp;Non-current liabilities |  | (759221) | (759221) |
| **Balance on March 31, 2026** |  |  |  |
| &nbsp;&nbsp;&nbsp;Current assets | 74447 |  | 74447 |
| &nbsp;&nbsp;&nbsp;Non-current assets | 85271 |  | 85271 |
| &nbsp;&nbsp;&nbsp;Current liabilities |  | (27325) | (27325) |
| &nbsp;&nbsp;&nbsp;Non-current liabilities |  | (775083) | (775083) |

---

31. FINANCIAL INSTRUMENTS AND RISK AND CAPITAL MANAGEMENT

**31. a. Derivative transactions**

The Company enters into derivative financial instrument contracts to mitigate the effects of inflation risks in lease contracts indexed to the IPCA (Brazilian Consumer Price Index), as well as against exchange rate risks related to liabilities in foreign currency. Derivative instruments are not used for speculative purposes, and existing exchange rate risks are duly covered (hedged).

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

In addition, the Company implemented has a hedging program to mitigate cash flow volatility resulting from fluctuations in the price of copper. These operations were carried out through NDF (Non-Deliverable Forward) contracts with monthly maturities until 2027, aiming to protect part of the projected sales volume. Considering the characteristics of these operations and pursuant to the applicable accounting standard, the Company adopted the hedge accounting methodology, as at cash flow hedge, for these operations. In situations where the anticipated transaction is no longer expected, the accumulated gain or loss and previously deferred hedging costs recognized in equity are immediately reclassified to profit or loss.

The Company maintains derivatives designated as cash flow hedges to protect future copper revenue projected for the next 24 months. The contracts, referenced to the price of copper in reais (LME\*PTAX), have an average contracted value of R$66,923 per ton, with 16,000 tons contracted considering a hedge ratio of 0:5 of the expected sales.

The hedge effects are recognized in other comprehensive income (hedge reserve) in equity and will be transferred to profit or loss as the hedged revenue impacts financial performance. If extraction does not occur on the scheduled dates, the contracts may be rolled over up to three times. After this limit, the amounts are reclassified to financial results.

The main source of ineffectiveness is the risk of not extracting copper on the scheduled dates. The qualitative effectiveness test as of March 31, 2026, confirmed that the hedge remained effective, given the 100% correlation between the hedged item and the derivative, since both have the same discount rate.

As of March 31, 2026, the Company did not recognize material expenses arising from losses on derivative transactions in its financial results.

The Company maintains internal controls regarding its derivative financial instruments which, in the opinion of Management, are adequate to control the risks associated with each market strategy. The results obtained by the Company in relation to its derivative financial instruments demonstrate that the management of risks by Management has been carried out appropriately. Since these derivative financial instrument contracts qualify as hedge accounting, the hedged risk can also be adjusted to fair value, offsetting the result of the derivative financial instruments, according to hedge accounting rules. This hedge accounting applies to both financial liabilities and probable cash flows in foreign currency.

Derivative financial instrument contracts have specific penalty clauses for breach of contract usually from by non-compliance with a contractual clause, resulting in the early settlement of the contract.

On March 31, 2026 and December 31, 2025, the Company held no embedded derivatives contracts or designated as a fair value hedge in their active portfolio.

*31.a.1. Fair value of derivative financial instruments*

The valuation method for the fair value of financial liabilities (if applicable) and derivative financial instruments is the discounted cash flow method, based on expected settlements or realization of liabilities and assets at market rates prevailing at the balance sheet date.

The fair values of the positions in *Reais* are calculated by projecting future inflows from transactions using B3 yield curves and discounting these flows to present value using market DI rates for swaps announced by B3.

The market values of foreign exchange derivatives were obtained using the market exchange rates in effect at the balance sheet date and projected market rates obtained from the currency's coupon-rate yield curves.

The linear convention of 360 calendar days was used to determine coupon rates of positions indexed in foreign currencies, while the exponential convention of 252 business days was used to determine coupon rates for positions indexed to CDI rates.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

Consolidated derivatives financial instruments shown below are registered with B3 and classified as swaps, which do not usually require margin deposits.

---

| | | | | |
|:---|:---|:---|:---|:---|
| |  |  | **Accumulated effects from fair value** | **Accumulated effects from fair value** |
| | **Notional Value** | **Notional Value** | **Amount receivable (payable)** | **Amount receivable (payable)** |
| <br>**Description** | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| **Swap contracts** |  |  |  |  |
| **<u>Assets position</u>** | **2227245** | **1945120** | **126932** | **118083** |
| <u>Foreign Currency</u> | 976541 | 626540 | 214 | 1406 |
| US$<sup>(1)</sup> | 770283 | 509245 | 100 | 1406 |
| EUR<sup>(1)</sup> | 106188 | 117295 |  |  |
| NDF US$<sup>(3)</sup> | 100070 |  | 114 |  |
| **<u>Floating rate</u>** | **267264** | **221461** | **2427** | **—** |
| CDI<sup>(1)</sup> | 222273 | 176470 | 2427 |  |
| Euribor<sup>(4)</sup> | 44991 | 44991 |  |  |
| **<u>Pre-rate</u>** | **933499** | **1048500** | **13284** | **—** |
| NDF Copper<sup>(5)</sup> | 933499 | 1048500 | 13284 |  |
| **<u>Inflation rates</u>** | **49941** | **48619** | **111007** | **116677** |
| IPCA<sup>(2)</sup> | 49941 | 48619 | 111007 | 116677 |
| **<u>Liabilities position</u>** | **(2227245)** | **(1945120)** | **(136465)** | **(198658)** |
| **<u>Floating rate</u>** | **(971404)** | **(720150)** | **(130535)** | **(122069)** |
| CDI<sup>(1)(2)</sup> | (971404) | (720150) | (130535) | (122069) |
| **<u>Commodities</u>** | **(933499)** | **(1048500)** | **(4348)** | **(72868)** |
| NDF Copper<sup>(5)</sup> | (933499) | (1048500) | (4348) | (72868) |
| **<u>Foreign Currency</u>** | **(222272)** | **(176470)** | **(192)** | **(3721)** |
| US$<sup>(1)</sup> | (202104) | (154230) | (192) | (3434) |
| EUR<sup>(1)</sup> | (20168) | (22240) |  | (287) |
|  | **Long position** |  | **133364** | **16328** |
|  | &nbsp;&nbsp;&nbsp;Current |  | 93137 | 7706 |
|  | &nbsp;&nbsp;&nbsp;Non-current |  | 40227 | 8622 |
|  | **Short position** |  | **(142897)** | **(96903)** |
|  | &nbsp;&nbsp;&nbsp;Current |  | (72190) | (53044) |
|  | &nbsp;&nbsp;&nbsp;Non-current |  | (70707) | (43859) |
|  | **Amounts payable, net** | **Amounts payable, net** | **(9533)** | **(80575)** |

---

(1) Foreign currency swap (euro and CDI x euro) (R$86,019) and (dollar and CDI x dollar) (R$568,180) –
swap transactions contracted with maturities up to May 22, 2026, with the objective of protecting against exchange rate variation risks
of net amounts payable (book value of R$2,656 payable and R$519 payable, respectively).

(2) IPCA x CDI swap (R$49,941) – swap transactions contracted with maturities in 2033 with the objective
of protecting against IPCA variation risk (book value of R$4,123 payable). Contracted forward transactions (NDF dollar x BRL) (R$100,070),
transactions contracted with maturities up to December 11, 2026, with the objective of protecting against exchange rate variation risks
of service contracts (book value of R$1,276 to be paid).

(3) Euribor x CDI swap (R$44,991) – swap transactions contracted with maturities in 2027 with the objective
of protecting against the risk of Euribor variation (book value of R$9,895 to be paid).

(4) Copper x Pre-fixed NDF (R$933,499 - LME in Reais \* Tons contracted) – Copper NDF transactions contracted
to protect future sales revenues against the variation in the price of copper on the LME in relation to the Real. (book value R$8,936
to be received) The transaction is designated for cash flow hedging.

Swap maturities and options after March 31, 2026, are as follows:

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| | **Company / Consolidated** | **Company / Consolidated** | **Company / Consolidated** | **Company / Consolidated** | **Company / Consolidated** | **Company / Consolidated** | **Company / Consolidated** |
| | **Maturing in** | **Maturing in** | **Maturing in** | **Maturing in** | **Maturing in** | **Maturing in** | |
| <br>**Swap contract** | **1 to 12 months** | **13 to 24 months** | **25 to 36 months** | **37 to 48 months** | **49 to 60 months** | **From 61 months** | <br>**Amount receivable (payable) on 03.31.2026** |
| IPCA x CDI | 5679 | 4304 | 4015 | 3289 | 2953 | (24363) | (4123) |
| Euribor x CDI |  | (9895) |  |  |  |  | (9895) |
| Foreign currency x CDI | (5410) |  |  |  |  |  | (5410) |
| NDF Copper x Pre | 19719 | (10783) |  |  |  |  | 8936 |
| Euribor x CDI | 2235 |  |  |  |  |  | 2235 |
| **Total** | **20947** | **(16374)** | **4015** | **3289** | **2953** | **(24363)** | **(9533)** |

---

For the preparation of these financial statements, the Company adopts the fair value measurement methodology for foreign currency x CDI and IPCA x CDI swaps, used to hedge financial debts. In this approach, only the derivative instruments are measured at fair value, while the related financial debts remain recorded at amortized cost.

For copper NDF transactions, the Company applies a cash flow hedging strategy. Changes in the fair value of these derivatives are recorded in Other Comprehensive Income and, as sales are made, are reclassified to Other Operating Revenues in the income statement.

In the quarters ended March 31, 2026 and 2025, derivative financial instruments generated negative and positive consolidated net results of R$61,062 and R$41,906, respectively (Note 27).

*31.a.2. Sensitivity analysis of the Company's risk variables*

Publicly-held companies are required to disclose sensitivity analyses for each type of market risk considered significant by Management, arising from financial instruments, to which the entity is exposed at the closing date, including derivative financial instruments.

Each financial instrument derivative transaction was assessed, and assumptions under a probable base scenario and a further two stressed scenarios that could adversely impact the Company.

For the probable base scenario, at the maturity dates for each of the transactions, the market rates sourced from B3 yield curves (currencies and interest rates) supplemented by data from the IBGE, Central Bank, FGV, among others. In the probable scenario, there is no impact on the fair value of the above-mentioned derivatives. For scenarios II and III, consistent with the CVM requirement, risk variables were stressed by 25% and 50%, respectively.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

Since the Company only holds derivatives to hedge its foreign currency assets and liabilities, other scenarios are not applicable. For these transactions, the Company reports the consolidated net exposure for each of the three scenarios on March 31, 2026:

---

| | | | | |
|:---|:---|:---|:---|:---|
| | | **Consolidated** | **Consolidated** | **Consolidated** |
| <br>**Transaction** | <br>**Risk** | **Probable** | **25% depreciation** | **50% depreciation** |
| Hedge (assets position) | Derivatives (depreciation risk EUR) | 128950 | 161187 | 193425 |
| Payables in EUR | Debt (appreciation risk EUR) | (135639) | (169549) | (203459) |
| Receivables in EUR | Debt (depreciation risk EUR) | 6735 | 8419 | 10103 |
|  | **Net Exposure** | **46** | **57** | **69** |
| Hedge (assets position) | Derivatives (depreciation risk US$) | 668224 | 835280 | 1002336 |
| Payables in US$ | Debt (appreciation risk US$) | (730477) | (913096) | (1095715) |
| Receivables in US$ | Debt (depreciation risk US$) | 62851 | 78564 | 94276 |
|  | **Net Exposure** | **598** | **748** | **897** |
| Copper Hedge (liabilities position) | Derivatives (High Copper Risk) | (4348) | (5435) | (8152) |
| Future Copper Revenue | Debts (Risk of a fall in copper prices) | 4348 | 5435 | 8152 |
|  | **Net Exposure** | **—** | **—** | **—** |
| Hedge (assets position) | Derivatives (risk of decrease in IPCA) | 25662 | 24282 | 14737 |
| Debt in IPCA | Debt (risk of increase in IPCA) | (25662) | (24282) | (14737) |
|  | **Net Exposure** |  |  |  |
| Hedge (assets position) | Derivatives (depreciation risk Euribor) | 9895 | 12369 | 14843 |
| Opex em US$ | Opex (risk of increase in Euribor) | (9895) | (12369) | (14843) |
|  | **Net Exposure** |  |  |  |
| Hedge (CDI position) |  |  |  |  |
| &nbsp;&nbsp;Hedge US$ and EUR (liabilities position) | Derivatives (risk of decrease in CDI) | 192 | 201 | 197 |
| &nbsp;&nbsp;Hedge IPCA (liabilities position) | Derivatives (risk of increase in CDI) | (29785) | (37231) | (44678) |
|  | **Net Exposure** | **(29593)** | **(37030)** | **(44481)** |
| **Total net exposure in each scenario** |  | **(28949)** | **(36225)** | **(43515)** |
| **Net effect on changes in current fair value** |  | **—** | **(7276)** | **(14566)** |

---

The fair values above are based on the portfolio position on March 31, 2026, but do not contemplate other changes to market variables which are constantly monitored by the Company. The use of different assumptions could significantly affect the estimates.

For the calculation of the net exposure for the sensitivity analysis, all derivatives were considered at market value and hedged items designated for hedges for accounting purposes were also considered at fair value.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

The assumptions used by the Company for the sensitivity analysis on March 31, 2026, were as follows:

---

| | | | |
|:---|:---|:---|:---|
| **Risk Variable** | **Probable** | **25% depreciation** | **50% depreciation** |
| US$ | 5.22 | 6.52 | 7.83 |
| EUR | 6.00 | 7.50 | 8.99 |
| IPCA | 5.17% | 6.51% | 7.86% |
| IGPM | 1.05% | 1.31% | 1.58% |
| CDI | 14.65% | 18.31% | 21.98% |
| Euribor | 1.96% | 2.46% | 2.95% |
| Price of Copper (Ton) - US$ | 12160 | 15200 | 18240 |

---

**31. b. Fair value**

Being the fair value price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants on the measurement date. Fair value measurement is based on the assumption that the transaction to sell the asset or transfer the liability will take place (i) in the principal market for the asset or liability; and (ii) in the absence of a principal market, in the most advantageous market for that asset or liability. The Company and or its subsidiaries must have access to the principal or most advantageous market.

The fair value of an asset or a liability is measured using the assumptions that market participants would use when pricing an asset or liability, assuming that market participants act in their best economic interests.

Fair value measurement of a non-financial asset takes into consideration the capacity of a market participant to generate economic benefits through the best use of the asset or selling it to another market participant that would also make the best use of the asset.

The Company and its subsidiaries use appropriate valuation techniques to match their circumstances and for which there is sufficient data to measure the fair value, optimizing the use of observable inputs and minimizing the use of unobservable inputs.

The fair values of all assets and liabilities are classified within the fair value hierarchy described below, based on the lowest level of information that is significant to the fair value measurement as a whole: (i) Level 1: quoted market prices (unadjusted) in active markets for identical assets or liabilities; (ii) Level 2: valuation techniques for which there is a significantly lower level of information to measure the fair value directly or indirectly observable; and (iii) Level 3: valuation techniques for which the lowest and significant level of information to measure the fair value is not available.

For assets and liabilities recognized in the financial statements on a recurring basis, the Company and its subsidiaries determine whether transfers have occurred between levels of the hierarchy, reassessing the categorization (based on information at the lowest and most significant level for measuring the fair value as a whole) to each year end.

The Company and its subsidiaries assessed their financial assets and liabilities in relation to market values using available information and appropriate valuation methodologies. Both the interpretation of market data and the selection of valuation methods require considerable judgment and reasonable estimates to produce the most adequate realization value. As a result, the estimates shown do not necessarily indicate amounts that could be realized in the current market. The use of different assumptions for the market and/or methodologies may have a material effect on estimated realization values.

In the period/year ended March 31, 2026 and December 31, 2025, there were no transfers of fair value assessments between the aforementioned levels.

For fair value disclosure purposes, the Company and its subsidiaries have classified assets and liabilities based on the nature, characteristics, and risks of each item, as well as the level within the fair value hierarchy.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

Below is the composition and classification of financial assets and liabilities of March 31, 2026 and December 31, 2025.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | | | **Company** | **Company** | **Company** | **Company** |
| | | | **Book value** | **Book value** | **Fair value** | **Fair value** |
| | <br>**Classification by category** | <br>**Fair value hierarchy** | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| <br>**Financial Assets** |  |  |  |  |  |  |
| **Current** |  |  |  |  |  |  |
| Cash and cash equivalents (Note 3.) | 1 |  | 8595713 | 6538941 | 8595713 | 6538941 |
| Trade accounts receivable (Note 5) | 1 |  | 9755215 | 10082818 | 9755215 | 10082818 |
| Derivative transactions (Note 31.a) | 2 | Level 2 | 92848 | 7605 | 92848 | 7605 |
| Sale of real estate and other receivables (Note 11) | 1 |  | 152846 | 192472 | 152846 | 192472 |
| Loan agreement with subsidiary CloudCo Brasil (Note 11) | 1 |  | 52 | 1821 | 52 | 1821 |
| Related-party receivables (Note 11) | 1 |  | 106092 | 100293 | 106092 | 100293 |
| **Non-current** |  |  |  |  |  |  |
| Financial investments (Note 4) | 1 |  | 67379 | 40934 | 67379 | 40934 |
| Trade accounts receivable (Note 5) | 1 |  | 349040 | 241571 | 349040 | 241571 |
| Derivative transactions (Note 31.a) | 3 | Level 2 | 39304 | 6147 | 39304 | 6147 |
| Sale of real estate and other receivables (Note 11) | 1 |  | 274009 | 280619 | 274009 | 280619 |
| Loan agreement with subsidiary CloudCo Brasil (Note 11) | 1 |  | 45009 | 45009 | 45009 | 45009 |
| Related-party receivables (Note 11) | 1 |  | 55814 | 58952 | 55814 | 58952 |
| **Total financial assets** |  |  | **19533321** | **17597182** | **19533321** | **17597182** |
| **Financial Liabilities** |  |  |  |  |  |  |
| **Current** |  |  |  |  |  |  |
| Trade accounts payable, net (Note 16) | 1 |  | 9913335 | 9479701 | 9913335 | 9479701 |
| Loans and financing (Note 20.a) | 1 |  | 209159 | 227226 | 209159 | 227226 |
| Leases (Note 20.a) | 2 | Level 2 | 4793661 | 4861423 | 4793661 | 4861423 |
| Debentures (Note 20.a) | 1 |  | 66206 | 150438 | 66206 | 150438 |
| Reverse split and split of shares (Note 23.a) | 1 |  | 824443 | 824723 | 824443 | 824723 |
| Derivative transactions (Note 31.a) | 2 | Level 2 | 65437 | 4938 | 65437 | 4938 |
| Derivative transactions (Note 31.a) | 3 | Level 2 | 5553 | 47595 | 5553 | 47595 |
| Liabilities with ANATEL (Note 22) | 1 |  | 103130 | 83558 | 103130 | 83558 |
| Reduction of capital of the Company (Note 22) | 1 |  | 91093 | 91093 | 91093 | 91093 |
| Amounts to be refunded to customers (Note 22) | 1 |  | 92994 | 103230 | 92994 | 103230 |
| Liabilities with related parties (Note 22) | 1 |  | 139641 | 145706 | 139641 | 145706 |
| **Non-current** |  |  |  |  |  |  |
| Loans and financing (Note 20.a) | 1 |  | 1214034 | 1212043 | 1214034 | 1212043 |
| Leases (Note 20.a) | 2 | Level 2 | 10163903 | 10493488 | 10163903 | 10493488 |
| Debentures (Note 20.a) | 1 |  | 2000000 | 2000000 | 2000000 | 2000000 |
| Derivative transactions (Note 31.a) | 2 | Level 2 | 59889 | 35428 | 59889 | 35428 |
| Liabilities with ANATEL (Note 22) | 1 |  | 929858 | 911899 | 929858 | 911899 |
| Liabilities with related parties (Note 22) | 1 |  | 818 | 830 | 818 | 830 |
| **Total financial liabilities** |  |  | **30673154** | **30673319** | **30673154** | **30673319** |

---

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | | | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** |
| | | | **Book value** | **Book value** | **Fair value** | **Fair value** |
| | <br>**Classification by category** | <br>**Fair value hierarchy** | **03.31.2026** | **12.31.2025** | **03.31.2026** | **12.31.2025** |
| <br>**Financial Assets** |  |  |  |  |  |  |
| **Current** |  |  |  |  |  |  |
| Cash and cash equivalents (Note 3) | 1 |  | 9063090 | 7032339 | 9063090 | 7032339 |
| Trade accounts receivable (Note 5) | 1 |  | 10302438 | 10619617 | 10302438 | 10619617 |
| Derivative transactions (Note 31.a) | 2 | Level 2 | 93137 | 7706 | 93137 | 7706 |
| Sale of real estate and other receivables (Note 11) | 1 |  | 152846 | 192472 | 152846 | 192472 |
| Related-party receivables (Note 11) | 1 |  | 30241 | 26317 | 30241 | 26317 |
| **Non-current** |  |  |  |  |  |  |
| Financial investments (Note 4) | 1 |  | 67801 | 41308 | 67801 | 41308 |
| Trade accounts receivable (Note 5) | 1 |  | 391100 | 283502 | 391100 | 283502 |
| Derivative transactions (Note 31.a) | 2 | Level 2 | 40227 | 8622 | 40227 | 8622 |
| Sale of real estate and other receivables (Note 11) | 1 |  | 274009 | 280619 | 274009 | 280619 |
| Related-party receivables (Note 11) | 1 |  | 157 | 154 | 157 | 154 |
| **Total financial assets** |  |  | **20503794** | **18591758** | **20503794** | **18591758** |
| **Financial Liabilities** |  |  |  |  |  |  |
| **Current** |  |  |  |  |  |  |
| Trade accounts payable, net (Note 16) | 1 |  | 10232441 | 9861294 | 10232441 | 9861294 |
| Loans and financing (Note 20.a) | 1 |  | 283605 | 304235 | 283605 | 304235 |
| Leases (Note 20.a) | 2 | Level 2 | 4814965 | 4883176 | 4814965 | 4883176 |
| Debentures (Note 20.a) | 1 |  | 94035 | 161453 | 94035 | 161453 |
| Reverse split and split of shares (Note 23.a) | 1 |  | 824443 | 824723 | 824443 | 824723 |
| Derivative transactions (Note 31.a) | 2 | Level 2 | 66637 | 5449 | 66637 | 5449 |
| Liabilities with ANATEL (Note 22) | 1 |  | 103130 | 83558 | 103130 | 83558 |
| Reduction of capital of the Company (Note 22) | 1 |  | 91093 | 91093 | 91093 | 91093 |
| Amounts to be refunded to customers (Note 22) | 1 |  | 99170 | 108166 | 99170 | 108166 |
| Liabilities with related parties (Note 22) | 1 |  | 131482 | 138026 | 131482 | 138026 |
| **Non-current** |  |  |  |  |  |  |
| Loans and financing (Note 20.a) | 1 |  | 1539032 | 1542627 | 1539032 | 1542627 |
| Leases (Note 20.a) | 2 | Level 2 | 10217313 | 10549678 | 10217313 | 10549678 |
| Debentures (Note 20.a) | 1 |  | 2921459 | 2905512 | 2921459 | 2905512 |
| Derivative transactions (Note 31.a) | 2 | Level 2 | 70707 | 43859 | 70707 | 43859 |
| Liabilities with ANATEL (Note 22) | 1 |  | 929858 | 911899 | 929858 | 911899 |
| Liabilities with related parties (Note 22) | 1 |  | 587 | 602 | 587 | 602 |
| **Total financial liabilities** |  |  | **32425510** | **32462945** | **32425510** | **32462945** |

---

<u>Classification by category:</u> (1) Amortized cost; (2) Measured at fair value through profit or loss and (3) Measured at fair value through OCI.

**31. c. Capital management**

The purpose of capital management is to ensure maintenance of a high credit rating and an optimal capital ratio to support the Company's business and maximize shareholder value.

The Company manages its capital structure by making adjustments and adapting to current economic conditions. In seeking such equilibrium, the Company may pay dividends, obtain new loans, issue debentures and contract derivatives. For the period ended March 31, 2026, there were no changes in capital structure objectives, policies or processes.

The Company includes in the net debt structure the balances of loans, financing, debentures, leases and other creditors and derivative financial instruments, less cash and equivalents cash and accounts receivable from credit rights (FIDC Vivo Money).

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

 **31. d. Risk management policy**

The Company and its subsidiaries are exposed to several market risks as a result of its commercial operations, debts contracted to finance its activities and debt-related financial instruments.

*31.d.1. Currency Risk*

The Company is exposed to the foreign exchange risk for financial assets and liabilities denominated in foreign currencies, which may reduce receivables or increase payables depending on the exchange rate in the period.

Hedging transactions were executed to minimize the risks associated with exchange rate changes on financial assets and liabilities in foreign currencies. This balance is subject to daily changes due to the dynamics of the business. However, the Company seeks to provide cover for the net balance of these assets and obligations (US$127,912 thousand and €21,485 thousand paid by March 31, 2026, and US$64,147 thousand, €21,529 thousand and £5 thousand paid by December 31, 2025) to mitigate its foreign exchange risks.

*31.d.2. Interest and Inflation Risk*

This risk may arise from an unfavorable change in the domestic interest rate, which may adversely affect financial expenses for the portion of debentures linked to the CDI rate and liability positions in derivatives (currency hedge and IPCA) pegged to floating interest rates (CDI).

To reduce exposure to the floating interest rate (CDI), the Company and its subsidiaries have invested cash equivalents of R$9,000,221 and R$6,945,770 on March 31, 2026, and December 31, 2025, respectively, mostly in short-term CDI-based financial investments (CDBs). The carrying amounts of these instruments approximate their fair values, as they may be redeemed in the short term.

*31.d.3. Liquidity Risk* 

Liquidity risk arises from the possibility of the Company not having sufficient funds to meet its commitments due to the different timing and settlement terms of its rights and obligations.

The Company structures the maturities of financial instruments to manage their liquidity.

The Company's cash flow and liquidity are managed on a daily basis by the operating departments to ensure that cash flows and contracted funding, when necessary, are sufficient to meet scheduled commitments in to mitigate liquidity risk.

The maturity profile of consolidated financial liabilities includes future principal and interest amounts up to the maturity date. For fixed rate liabilities, interest was calculated based on the indices established in each contract. For floating rate liabilities, interest was calculated based on the market forecast for each period.

In order to minimize liquidity risk and ensure compliance with obligations, the Company's cash investment policy prioritizes instruments indexed to the CDI (floating rate), with daily liquidity and counterparties whose credit rating and/or balance scorecard indicate low credit risk. In addition, the investment policy establishes diversification limits for counterparties, fortifying the Company's ability to honor its payment commitments.

*31.d.4. Credit Risk*

Credit risk arises from the possibility that the Company may incur losses resulting from difficulties in receiving invoiced amounts for the provision of services and sale of devices and equipment to its B2C and B2B customers and distributor network.

The credit risk from accounts receivable is diversified and risk minimized by diligent control over the customer base and constant risk analysis. The Company monitors the level of accounts receivable and limits the risk of unpaid bills on an ongoing basis, negating access to its services if the invoice is overdue. For prepaid mobile customers there is no credit risk.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

The credit risk from the sale of devices is managed by a conservative policy for granting credit, through management methods, including credit scoring techniques, analysis of financial statements and information and consultation of commercial databases, in addition to the request for guarantees.

The Company and its subsidiaries are also subject to credit risk arising from their financial investments, letters of guarantee received as collateral for certain transactions and amounts receivable from derivative financial instruments. The Company and its subsidiaries monitor the credit limit granted to each counterparty and diversify this exposure among top-tier financial institutions, in accordance with the current counterparty credit policy.

*31.d.5. Exchange rate and commodity risk*

The Company is exposed to exchange rate fluctuations linked to commodity risk arising from future revenue from copper sales, since both the international price of the metal and the exchange rate of the foreign currency can impact the amount to be received. Adverse variations in these markets can reduce revenue in reais and increase the volatility of results.

To mitigate these risks, hedging operations with financial derivatives were contracted, designed to simultaneously protect against currency exposure and exposure to the price of copper. These operations aim to maintain greater predictability in the project's cash flow and minimize the impacts of market fluctuations.

The amount covered, corresponding to 16,000 tons, is adjusted according to the dynamics of projected sales and the evolution of market conditions, ensuring continuous alignment between the protected volume and the Company's effective exposure.

*31.d.6. Insurance Coverage*

The policy of the Company and its subsidiaries, as well as the Telefónica Group, includes maintaining insurance coverage for all high-risk assets and liabilities of significant value, as determined by Management, following the guidelines of Telefónica's corporate program.

On March 31, 2026, the maximum limits of claims (established pursuant to the agreements of each entity consolidated by the Company) for significant assets, liabilities or interests covered by insurance and their respective total R$900,000 for operational risks (including business interruption) and R$106,000 for general civil liability.

Management considers the insurance coverage to be sufficient to cover any potential claims.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

32. SUPPLEMENTAL CASH FLOW INFORMATION

The consolidated cash flow financing activities for the quarters ended March 31, 2026, and 2025.

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** |
|  | | **Cash flows from financing activities** | **Cash flows from operating activities** | **Financing activities not involving cash and cash equivalents** | **Financing activities not involving cash and cash equivalents** | **Financing activities not involving cash and cash equivalents** | |
|  | <br>**Balance on December 31, 2025** | **Write-offs (payments)** | **Write-offs (payments)** | **Financial charges, foreign exchange variation** | **Additions (cancellations) of contracts** | **Interim and unclaimed dividends and interest on equity** | <br>**Balance on March 31, 2026** |
| Interim dividends and interest on equity | 2774544 | (384) |  |  |  | 443826 | 3217986 |
| Loans and financing | 1846862 | (47256) | (18815) | 41846 |  |  | 1822637 |
| Leases | 15432854 | (924023) | (448813) | 447558 | 524702 |  | 15032278 |
| Debentures | 3066965 |  | (159609) | 108138 |  |  | 3015494 |
| Reverse stock split and stock split | 824723 | (280) |  |  |  |  | 824443 |
| Reduction of the Company's capital | 91093 |  |  |  |  |  | 91093 |
| Derivative financial instruments | 80575 | (51575) | (6738) | (12729) |  |  | 9533 |
| **Total** | **24117616** | **(1023518)** | **(633975)** | **584813** | **524702** | **443826** | **24013464** |

---

---

| | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** | **Consolidated** |
|  | | **Cash flows from financing activities** | **Cash flows from financing activities** | **Cash flows from operating activities** | **Financing activities not involving cash and cash equivalents** | **Financing activities not involving cash and cash equivalents** | **Financing activities not involving cash and cash equivalents** | **Financing activities not involving cash and cash equivalents** | |
|  | <br>**Balance on December 31, 2024** | **Entries** | **Write-offs (payments)** | **Write-offs (payments)** | **Financial charges, foreign exchange variation** | **Additions (cancellations) of contracts** | **Business combination** | **Interim and unclaimed dividends and interest on equity** | <br>**Balance on March 31, 2025** |
| Interim dividends and interest on equity | 2237090 |  | (137) |  |  |  |  | 326882 | 2563835 |
| Loans and financing | 1804710 | 20000 | (26749) | (9214) | 45317 | 189697 | 69921 |  | 2093682 |
| Leases | 15246606 |  | (842943) | (405842) | 413878 | 453237 |  |  | 14864936 |
| Debentures | 3695214 |  |  | (210154) | 115712 |  |  |  | 3600772 |
| Derivative financial instruments | (6095) |  | (37230) | (8) | 42238 |  |  |  | (1095) |
| **Total** | **22977525** | **20000** | **(907059)** | **(625218)** | **617145** | **642934** | **69921** | **326882** | **23122130** |

---

33. CONTRACTUAL COMMITMENTS AND GUARANTEES

**33. a. Contractual commitments**

The Company has off-book contractual commitments arising from the purchase of goods and services, which mature on several dates, settled via monthly payments.

At March 31, 2026, the future nominal values over the entire contract periods were:

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| | |
|:---|:---|
| **Periods** | **Consolidated** |
| 1 to 12 months | 1083284 |
| 13 to 24 months | 949195 |
| 25 to 36 months | 952757 |
| 37 to 48 months | 934017 |
| 49 to 60 months | 705152 |
| From 61 months | 1501849 |
| **Total<sup>(1)</sup>** | **6126254** |

---

(1) Includes R$1,589,411, referring to contracts for the provision of security services with Telefónica
Cybersecurity Tech, S.L.U. ("CyberCo") and its subsidiaries, companies of the Telefónica Group.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

 **33. b. Guarantees**

On March 31, 2026, the Company had guarantees for several commitments with ANATEL, suppliers and legal proceedings:

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| | |
|:---|:---|
|  | **Consolidated** |
| Insurance of guarantee<sup>(1)</sup> | 31203994 |
| Letters of guarantee<sup>(2)</sup> | 10053619 |
| Judicial deposits and garnishments (Note 10) | 2995933 |
| Property and equipment (Note 13.d) | 9402 |
| Financial applications - Legal proceedings and SUDENE | 67801 |
| **Total** | **44330749** |

---

(1) These refer to insurance values contracted to guarantee the continuity of the discussion
of judicial processes (note 19).

(2) Includes the contracting of guarantees arising from the Self-Composition Agreement for the Adaptation
of STFC Concession Contracts, concluded in 2025.

34. OTHER MATTERS

**34. a. Environmental Risks**

The Company's operations and properties are subject to various environmental laws and regulations that govern environmental licenses and registrations, protection of fauna and flora, atmospheric emissions, waste management and remediation of contaminated areas, among others. If the Company or its business partners are unable to comply with current and future legal requirements, or identify and manage new or existing environmental liabilities, it will may incur significant costs, which include investigation and remediation costs, indemnities, compensation, adjustment of conduct, fines, suspension of activities and other penalties, investments to improve facilities or change operations, in addition to damage to the Company's reputation in the market.

The identification of new relevant environmental issues, changes in assessment criteria by regulatory agencies, more restrictive laws and regulations or other unforeseen events may result in significant environmental liabilities and their respective costs. The occurrence of any of these factors could have a material adverse effect on the Company's business, results of operations and financial condition. Pursuant to article 75 of Law No. 9,605/1998, the maximum fine for non-compliance with the environmental law is R$50,000 plus losses related to embargoes or administrative sanctions, in addition to indemnities and repairs for damages caused to the environment.

Climate change poses a number of potential systemic risks (environmental, financial and socioeconomic) to telecommunications operators from both a regulatory and physical perspective. Increased intensity and frequency of extreme events, such as precipitation, cyclones, floods, fires and heat waves, may damage, suspend or interrupt the Company's transmission operations for an indefinite period. Should a succession of extreme weather events occur, the Company may not have sufficient resources to repair its infrastructure in a timely and cost-effective manner.

In a quantitative analysis, it is noted that the increase in temperature directly affects the operating conditions of the Company's network equipment, which can cause failures, accelerated wear and loss of assets and, therefore, increase the probability of service interruptions, generating reputational and financial risks. For this reason, cooling the equipment is essential to ensure the proper operation of the Company. In more serious cases, the risk of fires can also increase. As a result, global warming can increase demands for cooling and energy use, increasing our operating costs.

The telecommunications sector is not particularly dependent on fossil fuels, but it is dependent on electricity consumption for its networks, so variations in electricity prices are sensitive to the sector and can have a significant impact on the Company's operating expenses related to energy. The estimated economic impact of this risk classifies it as substantive, on the horizon of 2030.

---

| | |
|:---|:---|
| **Telefônica Brasil S.A.** | (A free translation of the original in Portuguese) |
| **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** | **NOTES TO THE INDIVIDUAL AND CONSOLIDATED QUARTERLY INFORMATION** |
| Three-month period ended March 31, 2026 and 2025 | Three-month period ended March 31, 2026 and 2025 |
| (In thousands of Reais, unless otherwise stated) | (In thousands of Reais, unless otherwise stated) |

---

To manage climate risks, the Company performs diagnostics on physical and transition risks, promotes energy efficiency programs and renewable energy and distributed energy generation plans, in addition to having a dedicated business continuity area, guided by the Global Business Continuity Regulation ("GBC"), which is responsible for ensuring that the company is prepared to face unforeseen events, minimize impacts and maintain the continuity of operations in adverse situations.

**34. b. Compliance**

The Company is subject to compliance with Brazilian legislation related to combating corruption, in particular Law No. 12,846/2013 and Decree No. 11,129/2022, as well as foreign legislation in the jurisdictions in which it operates as a securities issuer and securities, more specifically the US Foreign Corrupt Practice Act (FCPA) of 1977.

Violations of legislation aimed at combating corruption may result in financial penalties, damage to reputation and other legal consequences that may negatively affect the Company's activities, the results of its operations or its financial condition.

The Company has internal policies and procedures designed to prevent, detect and remedy non-compliance with these laws by the Company's directors, officers, partners, executives, representatives and service providers and develops and implements initiatives to ensure continuous improvement of its Compliance Program, through a robust organizational and governance structure that guarantees operations based on ethics, transparency and respect for applicable laws and regulations.

As a result of its commitment to maintaining a robust Compliance Program, the Company has obtained the DSC 10,000 certification annually since 2020, currently valid until December 12, 2026. In 2023, it was recognized as a Pro-Ethics company, an initiative of the Brazilian Comptroller General's Office ("CGU") and the Ethos Institute to promote the voluntary adoption of integrity measures by companies and, thus, recognize those that demonstrate commitment to implementing actions aimed at preventing, detecting, and remedying acts of corruption and fraud. In 2024, it received the award for best Compliance department in the Telecom and Technology sector from the Leaders League Compliance Summit & Awards Brazil, and in 2025 it was highlighted as "Compliance Program of the Year".

35. SUBSEQUENT EVENTS

**35. a. Declaration of Distribution of Interest on Equity**

At a meeting held on April 15, 2026, the Company's Board of Directors approved the declaration of interest on equity ("JSCP"), pursuant to Article 26 of the Company's Bylaws, Article 9 of Law No. 9,249/1995 and CVM Resolution No. 143/2022, in the gross amount of R$365,000, equivalent to R$0.11421932485 per common share, at a withholding tax rate of 17.5%, resulting in a net amount of R$301,125, equivalent to R$0.09423094300 per common share, calculated based on the balance sheet as of March 31, 2026. The net value per share considers the standard tax rate of 17.5%, and may be subject to changes due to international treaties, immunities and exemptions. tax systems, countries with favorable tax regimes, and privileged tax regimes.

As provided for in Article 26 of the Company's Bylaws, interest on equity will be paid as an advance against the mandatory dividend for the year ending December 31, 2026, subject to ratification by the Ordinary General Meeting of Shareholders to be held in 2027.

These dividends will be paid by April 30, 2027, on a date to be determined by the Company's Board of Directors, and will be credited individually to each shareholder, respecting the shareholding position recorded in the Company's records at the end of the day on April 27, 2026. After this date, the shares will be considered "ex-interest".

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.

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| | | | | |
|:---|:---|:---|:---|:---|
|  |  | &nbsp;&nbsp; **TELEFÔNICA BRASIL S.A.** | &nbsp;&nbsp; **TELEFÔNICA BRASIL S.A.** | &nbsp;&nbsp; **TELEFÔNICA BRASIL S.A.** |
| &nbsp;&nbsp; Date: | &nbsp;&nbsp; May 21, 2026 | &nbsp;&nbsp; By: | &nbsp;&nbsp; /s/ João Pedro Carneiro  | &nbsp;&nbsp; /s/ João Pedro Carneiro  |
|  |  |  | Name: | &nbsp;&nbsp;João Pedro Carneiro |
|  |  |  | Title: | &nbsp;&nbsp; Investor Relations Director |

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