As filed with the Securities and Exchange Commission on February 22, 2024 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 20-F ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☐ SHELL COMPANY REPORT PURSU ...

Financial Data and Key Metrics Changes - Total revenue increased by 6.9% year-over-year in Q4 2023 and 8.4% for the full year [6] - Mobile service revenue grew by 8.7% in Q4 and 10.8% for the year [7] - EBITDA rose by 9.9% year-over-year in Q4, closing the year up 10.6% compared to 2022 [7] - Net income reached R$5 billion in 2023, up 23% [8] - Operating cash flow accelerated to R$12.4 billion in 2023, with free cash flow generation expanding to R$8.1 billion [7][29] Business Line Data and Key Metrics Changes - Mobile segment represented over 70% of total revenue, with an 8.4% year-over-year increase [8] - Fixed revenues from fiber continued to grow, with a target to reach 29 million homes passed by the end of 2024 [12] - Digital B2B services totaled R$3.4 billion in 2023, up 25% year-over-year [14] - Financial services revenues reached R$403 million, up 36% year-over-year [17] Market Data and Key Metrics Changes - Postpaid churn reached a historical low of 0.97% per month [9] - ARPU growth of 8% year-over-year, reaching the highest level in four years [10] - 5G ready devices accounted for 89% of all smartphones sold by the company [11] Company Strategy and Development Direction - The company aims to maintain its leadership in the fiber market and expand its digital services portfolio [12][14] - Focus on reducing CapEx intensity while improving profitability, with a CapEx to sales ratio dropping from 20% in 2022 to 17% in 2023 [27] - Continued investment in future-proof networks like fiber and 5G, while shutting down legacy technologies [28] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in sustaining strong cash flow and profitability, driven by a robust EBITDA and reduced CapEx intensity [36][29] - The company remains optimistic about growth in 2024, with expectations for increased consumption in both B2C and B2B segments [66] Other Important Information - The company was recognized as the most sustainable company in Brazil and received the Climate Guardian Award during COP 28 [21][22] - Shareholder remuneration totaled R$4.8 billion in 2023, with a commitment to pay at least 100% of net income in the following years [31][32] Q&A Session Summary Question: Working capital decline and prepayment of contracts - Management explained that the decline in working capital was due to seasonal factors and prepayments to suppliers, which is a normal business practice [36] Question: Future CapEx behavior and margin outlook - Management indicated that CapEx intensity is expected to continue decreasing, with a focus on maintaining strong margins [44][48] Question: B2B revenue drivers and expectations for 2024 - Management highlighted the unique value proposition in B2B, with expectations for continued double-digit growth in digital services [72] Question: Competition in the broadband market - Management acknowledged ongoing competition but emphasized the company's strong position and customer growth in the fiber segment [54][56] Question: Churn levels and price increases in mobile - Management noted that churn is at a historical low due to improved customer experience and service offerings, with planned price increases aligned with inflation [80][84]

Financial Data and Key Metrics Changes - The company reported a revenue growth of 7.5% year-over-year and an EBITDA increase of 11.7% year-over-year, both exceeding inflation [5][6] - EBITDA reached an all-time high of R$5.5 billion in the quarter, with a margin of 42.2%, leading to a net income of R$3.4 billion year-to-date, up 15.9% year-over-year [6][10] - Operating cash flow grew 27.1% year-over-year to R$8.9 billion, while free cash flow expanded 16.7% to R$7.6 billion [6][23] Business Line Data and Key Metrics Changes - Mobile service revenues saw an organic growth of 9.0% year-over-year, driven by upselling to postpaid plans [8] - Handsets and electronics revenue increased by 13.5% year-over-year, attributed to the sale of high-value 5G devices [9] - Digital B2B services generated R$3.2 billion in the last 12 months, up 28% year-over-year, representing 6% of total revenue [14] Market Data and Key Metrics Changes - The postpaid customer base surpassed 60 million, with postpaid access now representing 62% of total mobile access [10] - The fiber operation reached 25.1 million homes passed, with a target of 29 million by the end of next year [12] - The average revenue per user (ARPU) grew by 11% year-over-year, reaching its highest value in the last three years [10] Company Strategy and Development Direction - The company is focused on enhancing its digital services and expanding its fiber and mobile offerings, aiming for a unique value proposition in the market [10][19] - The strategy includes a commitment to achieving net zero emissions by 2040 and investing in renewable energy projects [19] - The company is exploring opportunities in the B2B segment, particularly targeting SMEs with integrated digital solutions [15] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in maintaining growth and profitability, citing strong customer acquisition and controlled churn rates [31] - The company is optimistic about future revenue growth, driven by a solid operational performance and a favorable competitive environment [32] - Management noted that while they are not providing specific guidance for 2024, they expect to continue the trend of reasonable CapEx and revenue growth [30] Other Important Information - The company declared R$2.6 billion in dividends and interest on capital and invested R$380 million in share buybacks [7] - A capital reduction request of up to R$5 billion was approved by Anatel, providing flexibility for shareholder remuneration [24] Q&A Session Summary Question: CapEx guidance for 2024 - Management confirmed that CapEx will remain below R$9 billion for the year and indicated that 2024 will not see a peak in CapEx as experienced in previous years [29][30] Question: Sustainability of margin increases - Management highlighted consistent revenue and EBITDA growth above inflation, with a focus on digital services contributing to margin improvements [36][38] Question: Update on network sharing agreement with TIM - Management confirmed successful expansion of 4G coverage and plans for further collaboration on 5G deployment [42][43] Question: Decommissioning of Oi sites - Management provided updates on the decommissioning process, indicating progress in negotiations and expected cost savings [54] Question: Potential tax changes - Management noted ongoing discussions regarding interest on capital and potential impacts from broader tax reforms, but no immediate changes are expected [58][60] Question: Pricing impacts on prepaid plans - Management confirmed that recent price increases on prepaid plans did not negatively affect recharge frequency, and they see room for further pricing adjustments [65][70] Question: Fiber-to-the-home ARPU trends - Management indicated positive trends in fiber-to-the-home ARPU, driven by increased service penetration and customer satisfaction [66][68]

| --- | --- | --- | --- | --- | --- | --- | --- | --- | |-------|-------|-------|-------|-------|-------|---------------------------------------------|--------------|-------| | | | | | | | | | | | | | | | | | | | | | | | | | | | | RESULTS 3Q23 | | | | | | | | | October 31 st , 2023 Telefônica Brasil S.A. | | | | | | | | | | Investor Relations | | | | | | | | | | | | | | | | | | | | | | | 1 DISCLAIMER 2 2 This presentation may contain forward-looking statements concerning prospects and objectives regarding t ...

Financial Data and Key Metrics Changes - Total revenues grew by 7.6% year-over-year, driven mainly by Mobile Oi service revenue, which increased by 10.4% [7] - EBITDA grew by 11.1% year-over-year, contributing to a 120 basis point margin expansion [8] - Net income reached BRL2 billion in the first half of 2023, an increase of 28.9% compared to the same period last year [9] - Free cash flow generation totaled BRL5.6 billion year-to-date, reflecting a 21.7% increase year-over-year [37] Business Line Data and Key Metrics Changes - Mobile service revenues experienced a 100% organic double-digit expansion in the first comparable quarter since the acquisition of Oi Mobile [11] - Fixed revenues from FTTH and Corporate Data, ICT, and Digital services grew at mid-teens rates, contributing positively to overall fixed revenue expansion [12] - The fiber business added 3.7 million homes, totaling 24.7 million homes passed, with a 15.1% year-over-year increase in customers [15] Market Data and Key Metrics Changes - Despite the disconnection of nearly 4 million inactive users from Oi, market share has consistently increased since consolidation began [13] - Postpaid churn reached its lowest historical level of 1% per month, nearly half the level from 2019 [14] - The average revenue per user (ARPU) grew by 11% year-over-year, indicating a positive trend in customer spending [13] Company Strategy and Development Direction - The company is focused on expanding its 5G coverage and enhancing mobile internet quality while capturing opportunities in FTTH expansion [98] - Vivo's strategy includes upselling to postpaid plans and integrating digital services to enhance customer lifetime value [52][60] - The company aims to reach 29 million homes passed by the end of 2024, maintaining a focus on quality connections [46] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the company's strong financial position and operational momentum, anticipating continued growth in mobile, fiber, and digital services [98] - The company remains optimistic about the macroeconomic environment and its ability to navigate competitive pressures [98] - Management highlighted the importance of consolidation in the market, viewing it as a positive development for the industry [42] Other Important Information - Vivo was recognized by Microsoft as its partner of the year 2023, showcasing the success of its partnership in providing digital solutions [21] - The company has made significant strides in ESG initiatives, including recycling electronic waste and promoting diversity within its workforce [24][25] Q&A Session Summary Question: Update on capital stock reduction and FTTH expansion - Management confirmed that the request for capital stock reduction is under review by Anatel and expressed confidence in receiving approval [40] - Regarding FTTH expansion, management noted that competition remains strong but emphasized their leadership in net additions and quality of service [44] Question: Mobile pricing strategy and postpaid user adjustments - Management indicated that recent price adjustments are expected to be sufficient for the year, with potential for further adjustments in prepaid pricing [51][53] Question: ARPU and churn dynamics - Management attributed positive ARPU growth to price increases, successful migration from prepaid to hybrid plans, and enhanced digital service offerings [60][62] Question: Working capital and financial services revenue - Management highlighted positive working capital dynamics and indicated that financial services revenue may see growth as new products are developed [70][78] Question: Fiber expansion and personnel expenses - Management provided insights into the profile of new cities for fiber expansion and discussed ongoing efforts to insource critical areas to stabilize personnel expenses [81][86] Question: Migration process and regulatory environment - Management expressed optimism about finding a solution regarding the migration process and emphasized the importance of discussing related financial numbers together [90][93]

Telefonica Brasil S.A. (NYSE:VIV) Q1 2023 Results Conference Call May 10, 2023 9:00 AM ET Company Participants Joao Pedro Carneiro - IR Director Christian Gebara - CEO David Melcon - CFO Conference Call Participants Andre Salles - UBS Daniel Federle - Credit Suisse Felipe Cheng - Santander Fred Mendes - Bank of America Marcelo Santos - JP Morgan Marco Nardini - XP Victor Ricciuti - Credit Suisse Operator Ladies and Gentlemen, welcome to Vivo First Quarter 2023 Earnings Call. This conference is being recorde ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March, 2023 Commission File Number: 001-14475 TELEFÔNICA BRASIL S.A. (Exact name of registrant as specified in its charter) TELEFONICA BRAZIL S.A. (Translation of registrant's name into English) Av. Eng° Luís Carlos Berrini, 1376 - 28º andar São Paulo, S.P. Federative Republic of Brazil (Address of princ ...

Table of Contents | 1 | | --- | | As filed with the Securities and Exchange Commission on February 17, 2023 | | UNITED STATES | | SECURITIES AND EXCHANGE COMMISSION | | Washington, D.C. 20549 | | FORM 20-F | | (Mark One) | | ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 | | OR | | ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 | | For the fiscal year ended December 31, 2022 | | OR | | ☐ TRANSITION REPORT PURSUANT TO S ...

Financial Data and Key Metrics Changes - The company closed 2022 with 112 million accesses, a 13.7% year-over-year increase, reinforcing its position as one of the largest companies in Brazil by client count [8] - Total revenue grew by 10.1% year-over-year in Q4, driven by a 13.6% increase in mobile service revenues and a 2.9% increase in fixed revenues, marking the best growth since Q4 2015 [9][16] - EBITDA expanded by 6.1% year-over-year, reaching a margin of 1.3% [9] - Free cash flow for the year was BRL7.3 billion, allowing for over BRL5 billion in dividends and interest on capital [10] Business Line Data and Key Metrics Changes - Mobile revenues increased by 13.4% year-over-year, with growth across postpaid, prepaid, and handset revenues [14] - Fixed core revenues climbed 11.9% year-over-year, with core products now representing 76% of the wired line business [15] - Digital B2B revenues grew by 29% year-over-year, reaching BRL2.7 billion, now representing 5.6% of total revenues [22] Market Data and Key Metrics Changes - The company added 14 million new mobile customers in 2022, reaching 98 million accesses, despite eliminating 3.4 million inactive lines from the Oi Mobile acquisition [17] - The postpaid base grew by 18.2% year-over-year, with churn rates remaining low at close to 1% [18] - FTTH access reached 5.5 million, with a 19% increase in the customer base [20] Company Strategy and Development Direction - The company is focused on enhancing its shareholder remuneration capabilities and has filed a request to potentially reduce its capital stock by up to BRL5 billion [12] - The strategy includes expanding 5G coverage and increasing FTTH penetration, with a commitment to invest less than BRL9 billion in 2023 [36] - The company aims to leverage its digital B2B and B2C services to capture growth opportunities in the market [22][100] Management's Comments on Operating Environment and Future Outlook - Management expressed optimism about finding a solution for the concession agreement with Anatel, emphasizing the low impact of core revenues on overall revenue mix [82][83] - The expectation of lower inflation in 2023 is seen as beneficial for the telecommunications sector, with potential for cost reductions and margin increases [46][52] - The company is confident in its ability to maintain strong cash flow generation and shareholder returns despite market challenges [41][86] Other Important Information - The company has initiated a new share buyback program, aiming to invest an additional BRL500 million over the next 12 months [11] - Significant investments in ESG initiatives were reported, including a 50% reduction in greenhouse gas emissions and a 20% increase in electronic waste collection [27][28] Q&A Session Summary Question: Why BRL5 billion for capital reduction? - Management believes BRL5 billion is the right amount to create a platform for higher cash distribution than annual net income, allowing for a payout above 100% if approved [47][48] Question: Opportunities to reduce costs in 2023? - Management highlighted that lower inflation and the integration of Oi Mobile assets will lead to cost savings and margin expansion [52][53] Question: Competitive environment in mobile? - The company is raising prices in response to inflation and expects competitors to follow suit, reflecting its superior value proposition [72][73] Question: Details on Vivo Money performance? - The loan portfolio reached BRL183 million, growing significantly year-over-year, with low levels of bad debt [77][80] Question: Future growth in B2B digital services? - Management sees strong growth potential in B2B digital services, driven by increasing demand for digitalization among businesses [100]

RESULTS 4Q22 February 16tʰ, 2023 Telefônica Brasil S.A. Investor Relations ·· Telefónica vivo B3 LISTED B3 ICO2B3 DISCLAIMER This presentation may contain forward-looking statements concerning prospects and objectives regarding the capture of synergies, growth of the subscriber base, a breakdown of the various services to be offered and their respective results Our actual results may differ materially from those contained in such forward-looking statements, due to a variety of factors, including Brazilian p ...