Interim report
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Disclaimer: This document contains certain “forward-looking statements”, which are based on management’s expectations, as well as on a number of assumptions concerning future events resulting from currently available information. Readers are cautioned not to put undue reliance on such forward-looking statements, which are not a guarantee of performance and are subject to a number of uncertainties and other factors, many of which are out of Entel’s control and could cause actual results to materially differ from such statements. - - 3Q & Nine Months 2026 Results Conference Call November 3rd, 2026 11:00 am Chile - 09:00 am New York Please register here or at informacioncorporativa.entel.cl/investors Ignacio Reyes Investor Relations Sr. Analyst ireyesc@entel.cl Contact Information Entel Investor Relations ir @entel.cl 3Q & Nine Months 2026 RESULTS Empresa Nacional de Telecomunicaciones S.A Paula Raventós Investor Relations Officer praventos@entel.cl
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Table of contents I. Third Quarter and Nine Months 2026 Results ................................................................................ 1 ESG: Environmental, Social and Governance Highlights ................................ ................................ .... 2 II. Consolidated Financial Results ............................................................................................... 2 III. Consolidated Balance Sheet and Financial Indicators .............................................................. 7 IV. Free Cash Flow .......................................................................................................................... 8 V. Chile: Financial Results and Operating Figures ........................................................................ 9 VI. Business Development by Segments ....................................................................................... 13 i. Consumer Segment (B2C) – Chile ................................ ................................ .............................. 13 ii. Corporate and SME Segment (B2B) – Chile ................................ ................................ ............. 16 VII. Peru: Financial Results and Operating Figures3 ...................................................................... 20 VIII. Segment Revenue and EBITDA Financial Information4 ........................................................... 23 IX. EBITDA Breakdown by Services .............................................................................................. 25 X. Glossary of terms .................................................................................................................... 25
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1 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 I. Third Quarter and Nine Months 2026 Results Santiago, Chile – November 2nd, 2026 – Empresa Nacional de Telecomunicaciones S.A. (Santiago Stock Exchange: ENTEL) “the Company” or “Entel”, today announced unaudited results for the third quarter (3Q26), ended September 30, 2026. All figures are expressed in Chilean Pesos and are reported according to International Financial Reporting Standards (IFRS) and local regulations issued by the Comisión para el Mercado Financiero (CMF). The average exchange rate in 3Q26 was Ch$ 906.11/US$ 1 (-5.3% YoY) and Ch$ 266.72/PEN$ 1 (+1.2% YoY). Average inflation in Chile (UF annual variation) from 3Q25 to 3Q26 was 3.98%. Third Quarter 2026 Highlights ▪ Mobile customer base reached 20,775,161 customers at the end of 3Q26 (+1.4% YoY), with +859.2k net additions in postpaid voice over the year (+7.6% YoY and +1.7% QoQ): +228.3k in Chile (+3.5%) and +630.9k in Peru (+13.2%). ▪ Fiber expansion in Chile: fiber internet connections reached 541,734, increasing 28.2% YoY and 5.2% QoQ. Total fiber RGUs in Chile reached 724,856 (+27.8% YoY). ▪ Consolidated revenues reached Ch$ 790.3 billion, up 5.7% YoY, with growth broad-based across both operations. Revenue in Peru rose 7.5% (+6.3% in US$ terms), with mobile service revenue up 6.7%, equipment sales up 9.0%, fixed and ICT revenue up 11.7% and wholesale revenue down 4.1%. Revenue in Chile rose 3.6%, with mobile service revenue up 4.4%, equipment sales up 8.7%, fixed and ICT revenue down 0.1% and wholesale revenue down 9.2%. ▪ Consolidated EBITDA reached Ch$ 229.5 billion, up 7.4% YoY, mainly driven by Peru (+16.5%; +14.8% in US$ terms), with an EBITDA margin of 29.0% (up 0.5 p.p. YoY). ▪ EBITDAaL reached Ch$ 181.4 billion, up 8.2% YoY, with an EBITDAaL margin of 22.9% (up 0.5 p.p. YoY). ▪ EBIT reached Ch$ 72.3 billion, up 2.3% YoY. ▪ Net income reached Ch$ 32.3 billion, up 5.3% YoY. ▪ During the first nine months of 2026, capital expenditures totaled Ch$ 336.8 billion, up 5.0% YoY, equivalent to 14.4% of revenues. • Net financial debt to EBITDA stood at 1.58x (2.35x including IFRS 16), against 1.64x (2.47x) in 4Q25, with gross financial debt up Ch$ 16.1 billion over the year. • Entel Ranks First in Mobile Telephony in the 2026 National Customer Satisfaction Award Entel ranked first in Mobile Telephony in Procalidad's National Customer Satisfaction Index for the second consecutive year, reflecting its work on network quality, digital experience and 5G coverage, with more than 3.8 million 5G users. (August 2026) • Direct to Cell Adoption in Peru Rapidly Approaches Chile, Surpassing 2.5 Million Enabled Customers Entel, the first operator in Latin America to launch direct -to-cell satellite service, has 2,509,380
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2 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 enabled customers in Peru, close to 3,046,385 in Chile, and Peru's satellite SMS traffic grew sevenfold from April to August. (October 2026) ▪ Entel Wins 2026 Consumer Loyalty Award in Mobile Telephony and Home Internet Granted in its 16th edition by ALCO Consultores and ESE Business School of Universidad de los Andes, the award recognized Entel's mobile and fixed businesses among the brands with the highest customer loyalty. (October 2026) ESG: Environmental, Social and Governance Highlights ▪ Entel Ranks Among the Top 10 Most Attractive Companies to Work for in Chile Entel ranked tenth in Merco Talento 2026 and first in the telecommunications sector for the third consecutive year, reflecting its focus on quality of life, flexible work and training through Universidad Entel. (August 2026) ▪ Entel Earns HuellaChile Quantification Seal for Its Corporate Carbon Footprint The Ministry of the Environment's HuellaChile program certified Entel's 2025 greenhouse gas inventory under NCh -ISO 14064-1:2019 for the second consecutive year; Entel now pursues the Reduction Seal, in line with its goal of cutting emissions from direct operations and electricity consumption by 42% by 2030 versus 2022. (October 2026) ▪ Entel to Deliver 15,000 Digital Skills and AI Training Opportunities for People Over 55 Entel's Fondo 55+, which has trained 7,695 people, will add 15,000 training opportunities and 1,000 AI scholarships under its Programa 70+, toward its goal of reaching 370,000 older adults by 2030, already 50.5% complete. (October 2026) ▪ Entel's Circular Economy Route Collects More Than 49,000 kg of E-Waste in 2026 The "Conciencia en Todas: Recicla – Reutiliza" route has collected 49,172 kg of electronic waste across 127 municipalities so far in 2026, supporting Entel's goal of recovering 20% of the handsets it sells each year by 2030. (October 2026) II. Consolidated Financial Results1 Ch$ million 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change Abs. Change Total Revenue 790.285 747.553 5,7% 42.732 2.346.396 2.195.186 6,9% 151.210 1 All figures in Ch$ millions, except EPS figures
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3 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 Ch$ million 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change Abs. Change Chile Mobile & Fixed Revenue 475.560 459.005 3,6% 16.555 1.433.919 1.359.712 5,5% 74.207 Mobile Revenue 340.601 322.448 5,6% 18.153 1.034.047 952.024 8,6% 82.022 Mobile Service Revenue 239.842 229.785 4,4% 10.057 717.962 675.179 6,3% 42.783 Mobile Equipment Revenue 100.759 92.663 8,7% 8.096 316.084 276.845 14,2% 39.239 Fixed & ICT Revenue 120.472 120.594 (0,1%) (121) 356.565 355.512 0,3% 1.053 Wholesales Revenue & others 14.487 15.964 (9,2%) (1.476) 43.308 52.176 (17,0%) (8.868) Peru Mobile & Fixed Revenue 286.513 266.572 7,5% 19.941 829.403 768.770 7,9% 60.633 Mobile Revenue Pe. 274.678 255.707 7,4% 18.971 795.766 736.692 8,0% 59.073 Mobile Service Revenue Pe. 186.169 174.543 6,7% 11.626 532.063 501.386 6,1% 30.677 Mobile Equipment Revenue Pe. 88.509 81.164 9,0% 7.345 263.702 235.306 12,1% 28.396 Fixed & ICT Revenue Pe. 9.993 8.943 11,7% 1.050 28.164 26.342 6,9% 1.822 Wholesales Revenue & others Pe. 1.843 1.922 (4,1%) (79) 5.473 5.736 (4,6%) (262) Call Center Services 4.999 4.860 2,9% 139 15.782 14.676 7,5% 1.106 Others Revenues - Non core 23.213 17.116 35,6% 6.097 67.293 52.028 29,3% 15.265 Other revenues 23.567 17.566 34,2% 6.001 68.059 51.803 31,4% 16.257 Proceeds/Loses Asset Sales (355) (450) (21,2%) 95 (767) 225 (440,0%) (992) Operating Costs 718.027 676.889 6,1% 41.139 2.141.770 2.016.038 6,2% 125.732 EBITDA 229.480 213.626 7,4% 15.854 662.603 609.840 8,7% 52.763 EBITDA Margin 29,0% 28,6% 0,5 p.p. 28,2% 27,8% 0,5 p.p. EBITDAaL 181.359 167.615 8,2% 13.744 521.260 477.118 9,3% 44.143 EBITDAaL Margin 22,9% 22,4% 0,5 p.p. 22,2% 21,7% 0,5 p.p. Depreciation and Amortization 157.223 142.962 10,0% 14.261 457.977 430.693 6,3% 27.285 Operating Income (EBIT) 72.258 70.665 2,3% 1.593 204.626 179.148 14,2% 25.478 Non-operating income (29.799) (15.048) 98,0% (14.751) (98.556) (116.601) (15,5%) 18.045 Financial Income 2.642 6.264 (57,8%) (3.621) 8.395 13.828 (39,3%) (5.432) Financial Expenses (29.640) (16.715) 77,3% (12.925) (82.542) (109.782) (24,8%) 27.240 Foreign Exchange Difference and Indexation Unit Results (2.800) (4.596) (39,1%) 1.795 (24.409) (20.647) 18,2% (3.763) Income before taxes (EBT) 42.459 55.617 (23,7%) (13.158) 106.070 62.547 69,6% 43.523 Income Taxes (10.131) (24.920) (59,3%) 14.789 (20.086) 9.721 (306,6%) (29.807) Net Income (Loss) 32.328 30.697 5,3% 1.631 85.985 72.268 19,0% 13.717 EPS 107 102 5,3% 5 285 239 19,0% 45
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4 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 Ch$ million 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change Abs. Change CAPEX 119.493 96.945 23,3% 22.549 336.790 320.828 5,0% 15.962 Capex/Revenue 15,1% 13,0% 2,2 p.p. 14,4% 14,6% (0,3) p.p. 3Q26 vs 3Q25: • Mobile customer base reached 20,775,161 subscribers, up 1.4% YoY (+285,975) and 2.6% QoQ (+521,997): 10,281,750 in Chile (+0.9% YoY and +0.4% QoQ) and 10,493,411 in Peru (+1.8% YoY and +4.8% QoQ). o Postpaid reached 14,743,743 subscribers, with 1,172,733 net additions YoY (+8.6%) and 295,558 in the quarter (+2.0%). Chile contributed 381,499 net additions over the year (+4.7%) and 93,564 in the quarter (+1.1%), supported by a differentiated value proposition th at includes direct -to-cell satellite coverage. Peru added 791,234 over the year (+14.7%) and 201,994 in the quarter (+3.4%). o Prepaid reached 6,031,418 subscribers, down 12.8% YoY ( -886,758) and up 3.9% in the quarter (+226,439). Chile recorded 285,604 disconnections over the year (-14.2%) and 49,689 in the quarter (-2.8%). Peru recorded 601,154 disconnections over the year ( -12.3%), reflecting industry-wide security-driven regulations restricting wholesale and street-channel SIM distribution, and 276,128 net additions in the quarter (+6.9%). • Fixed connections total fixed RGUs reached 791,648, up 15.7% YoY (+107,601) and 4.2% QoQ (+31,938), as fiber expansion more than offset the run-off of the fixed wireless base. o Fiber reached 741,957 connections, with 158,192 net additions YoY (+27.1%) and 37,295 in the quarter (+5.3%). Chile accounts for 724,856 of that base (+27.8% YoY and +5.4% QoQ), on stronger Subscribers / RGUs 3Q26 3Q25 % Change 2Q26 % Change Chile Mobile Subscribers 10.281.750 10.185.855 0,9% 10.237.875 0,4% Postpaid 8.554.572 8.173.073 4,7% 8.461.008 1,1% Prepaid 1.727.178 2.012.782 (14,2%) 1.776.867 (2,8%) Peru Mobile Subscribers 10.493.411 10.303.331 1,8% 10.015.289 4,8% Postpaid 6.189.171 5.397.937 14,7% 5.987.177 3,4% Prepaid 4.304.240 4.905.394 (12,3%) 4.028.112 6,9% Total Mobile Subscribers (Chile + Peru) 20.775.161 20.489.186 1,4% 20.253.164 2,6% Postpaid 14.743.743 13.571.010 8,6% 14.448.185 2,0% Prepaid 6.031.418 6.918.176 (12,8%) 5.804.979 3,9% Chile Fixed RGUs 760.813 645.747 17,8% 727.584 4,6% Wireless 35.957 78.523 (54,2%) 39.670 (9,4%) Fiber 724.856 567.224 27,8% 687.914 5,4% Peru Fixed RGUs 30.835 38.300 (19,5%) 32.126 (4,0%) Wireless 13.734 21.759 (36,9%) 15.378 (10,7%) Fiber 17.101 16.541 3,4% 16.748 2,1% Total Fixed RGUs (Chile + Peru) 791.648 684.047 15,7% 759.710 4,2% Wireless 49.691 100.282 (50,4%) 55.048 (9,7%) Fiber 741.957 583.765 27,1% 704.662 5,3%
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5 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 commercial execution and improved retention, and Peru for 17,101 (+3.4% YoY) , where fiber commercial rollout was launched during October 2026. o Fixed wireless fell to 49,691 connections, down 50.4% YoY ( -50,591) and 9.7% in the quarter ( - 5,357), as customers migrate toward higher-quality technologies. • Consolidated revenues reached Ch$ 790.3 billion, up 5.7% YoY, with both countries contributing to the growth. o Revenue in Chile reached Ch$ 475.6 billion, up 3.6% YoY, with mobile service revenue up 4.4%, equipment revenue up 8.7%, fixed and ICT revenue down 0.1% and wholesale revenue down 9.2%. o Revenue in Peru reached Ch$ 286.5 billion, up 7.5% YoY (+6.3% in US$ terms), with mobile service revenue up 6.7%, equipment revenue up 9.0%, fixed and ICT revenue up 11.7% and wholesale revenue down 4.1%. o EBITDA reached Ch$ 229.5 billion, up 7.4% YoY, growing ahead of revenue (+5.7%), with an EBITDA margin of 29.0%, up 0.5 p.p. from 28.6% in 3Q25. Growth was driven mainly by Peru (EBITDA +16.5%, margin 27.4%) on postpaid voice growth, lower churn and in -store efficiencies, followed by Chile (EBITDA +5.9%) due to increase in blended ARPU, a larger postpaid voice base, lower blended churn, and a stronger handset margin. o EBIT reached Ch$ 72.3 billion, up 2.3% YoY, growing below EBITDA because as it was affected by the costs of collective bargaining negotiations in 3Q26 and by depreciation and amortization. o EBITDAaL reached Ch$ 181.4 billion, up 8.2% YoY, with an EBITDAaL margin of 22.9%, up 0.5 p.p. from 22.4% in 3Q25. o Non-operating income reached a net cost of Ch$ 29.8 billion, against a net cost of Ch$ 15.0 billion in 3Q25. The Ch$ 14.8 billion increase is explained mainly by a base effect: in 3Q25, the Peru tax forward recorded a gain of Ch$ 15.9 billion as the exchange rate rose between 2Q25 and 3Q25. This gain does not recur, as the hedge was no longer needed after the 4Q2 5 capital increase in Entel Internacional, through the contribution of 100% of the shares of Entel Perú. In addition, financial income was Ch$ 3.6 billion lower, on lower derivative gains (Ch$ 2.4 billion) and lower interest on investments (Ch$ 1.2 billion). o Income taxes amounted to an expense of Ch$ 10.1 billion, against an expense of Ch$ 24.9 billion in 3Q25. The smaller contribution is a base effect: the year-ago period carried a materially larger tax gain linked to the CLP/USD exposure on the investment abroad. o Net income reached Ch$ 32.3 billion, up 5.3% YoY due to operating growth and lower income taxes. Revenues in the first nine months of 2026 reached Ch$ 2,346.4 billion, increasing 6.9% YoY, driven by Peru, where revenue rose 7.9% (+7.0% in US$ terms), and by Chile, where revenue grew 5.5% on higher mobile service (+6.3%), equipment (+14.2%) and fixed and ICT (+0.3%) revenue, partially offset by a 17.0% decline in wholesale revenue.
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6 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 EBITDA in the first nine months of 2026 reached Ch$ 662.6 billion, increasing 8.7% YoY, led by Peru (+13.9%; +12.6% in US$ terms), and Chile (+6.1%). EBITDA margin reached 28.2%, 0.5 p.p. above the 27.8% of 9M25, as EBITDA grew ahead of revenue (+6.9%). The operating result was Ch$ 204.6 billion, up 14.2%. Net Income in the first nine months of 2026 reached Ch$ 86.0 billion, increasing 19.0% YoY, on operating growth (14.2%) and a 15.5% improvement in the non-operating result, as 2025 included the cost of the tax forwards linked to the investment in Peru and interest on the bond prepaid in September 2025. CAPEX in the first nine months of 2026 reached Ch$ 336.8 billion, up 5.0% YoY, equivalent to 14.4% of revenues versus 14.6% in 9M25. Investment was concentrated in mobile services, particularly network infrastructure (5G and 4G), together with cross-business platforms, the fiber network, home services and B2B projects. Consolidated Costs of Operations Ch$ million 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change Abs. Change Cost of Operations 718.027 676.889 6,1% 41.139 2.141.770 2.016.038 6,2% 125.732 Access Charges & Payments 16.652 19.006 (12,4%) (2.354) 50.394 55.859 (9,8%) (5.465) Salaries and Expenses 93.391 87.720 6,5% 5.671 270.257 257.994 4,8% 12.263 Outsourced, supplies and Equipment Services 21.008 23.389 (10,2%) (2.381) 66.378 69.032 (3,8%) (2.654) Bad debt provisions 18.393 18.972 (3,1%) (579) 55.181 56.873 (3,0%) (1.692) Advertising, Sales commissions and expenses 58.298 54.260 7,4% 4.039 177.816 161.709 10,0% 16.107 Costs of equipment/Handset 162.112 150.338 7,8% 11.774 496.835 445.003 11,6% 51.832 Depreciation, amortization and impairment 157.223 142.962 10,0% 14.261 457.977 430.693 6,3% 27.285 Rents & Maintenance 85.937 76.217 12,8% 9.720 256.474 227.909 12,5% 28.565 Others service operators 15.482 17.447 (11,3%) (1.964) 49.058 51.082 (4,0%) (2.024) Professionals services & Consultancy 23.057 23.198 (0,6%) (141) 67.768 70.304 (3,6%) (2.536) Energy & others 25.241 22.027 14,6% 3.215 73.196 67.950 7,7% 5.245 Others 41.233 41.354 (0,3%) (121) 120.436 121.631 (1,0%) (1.195) 3Q26 vs 3Q25: Consolidated costs of operations reached Ch$ 718.0 billion, up 6.1% YoY, growing 0.4 percentage points above revenue on the 10.0% increase in depreciation and amortization.
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7 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 • Costs of Equipment / Handset totaled Ch$ 162.1 billion, increasing 7.8% YoY, tracking the growth in mobile equipment revenue in Chile and Peru. • Rents & Maintenance totaled Ch$ 85.9 billion, up 12.8% YoY, explained by higher rental costs associated with the fiber leasing needed to support the growth of fiber connections in Chile and satellite connections. • Advertising, Sales Commissions and Expenses amounted to Ch$ 58.3 billion, increasing 7.4% YoY, driven by higher customer acquisition costs and sales commissions. • Salaries and Expenses reached Ch$ 93.4 billion, up 6.5% YoY, mainly due to the costs of collective bargaining negotiations in 3Q26. • Depreciation and amortization totaled Ch$ 157.2 billion, up 10.0% YoY due to additions to property, plant and equipment, mainly investments in plant, equipment and technology, and in leases. Cost of operations as of September 2026, increased 6.1% compared to the same period in 2025 mainly due to handset costs associated with growth in sales, and higher rental costs associated with fiber leasing, and increased in depreciations and salaries and expenses. III. Consolidated Balance Sheet and Financial Indicators Ch$ million September 2026 December 2025 % Change Current Assets 1.322.791 1.349.902 (2,0%) Cash and Equivalents 116.004 233.650 (50,4%) Assets for Sale - - Other Current assets 1.206.788 1.116.252 8,1% Non-Current Assets 4.462.131 4.366.977 2,2% Property, plan & Equipment 2.370.233 2.326.734 1,9% Other Non-current assets 2.091.898 2.040.243 2,5% Total Assets 5.784.923 5.716.880 1,2% Current Liabilities 1.045.139 1.165.931 (10,4%) Current financial liabilities 23.492 94.730 (75,2%) Current leasing liabilities 152.167 148.627 2,4% Other current liabilities 869.479 922.574 (5,8%) Non-Current Liabilities 2.640.417 2.607.652 1,3% Non-current financial liabilities 1.664.149 1.624.883 2,4%
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8 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 Ch$ million September 2026 December 2025 % Change Non-current leasing liabilities 534.112 543.262 (1,7%) Other non-current liabilities 442.155 439.507 0,6% Total Liabilities 3.685.556 3.773.583 (2,3%) Total Stockholder's Equity 2.099.367 1.943.297 8,0% Total Liabilities and Equity 5.784.923 5.716.880 1,2% Covenants 3Q25 4Q25 1Q26 2Q26 3Q26 EBITDA/Net Financial expenses ( > 2,5) 8,86 6,62 8,39 9,85 8,29 Net Financial Debt (NFD)/EBITDA ( < 4,0) 1,66 1,64 1,56 1,67 1,58 Other indicators Current Assets/Current Liabilities 1,25 1,16 1,23 1,23 1,27 (NFD+IFRS16 liabilities)/EBITDA 2,51 2,47 2,35 2,42 2,35 Total Liabilities/ (Equity + Min interest) 1,85 1,94 1,86 1,85 1,76 DFN/(Equity + min interest) 0,69 0,70 0,68 0,73 0,67 Gross Debt (CLP $ Billion) 1.638 1.579 1.598 1.606 1.654 Net Financial Debt (CLP $ Billion) 1.358 1.369 1.336 1.454 1.399 • Gross financial debt as of September 30th, 2026 stood at Ch$ 1,653.7 billion, up 4.8% from December 2025 , reflecting the higher Ch$/US$ exchange rate on the US dollar - denominated bond and UF indexation on local bonds. • Net financial debt reached Ch$ 1,399.1 billion, up 2.2% compared with December 2025, mainly due to the maturity of the Peru tax forwards and CCS, and to UF indexation of the UF-denominated bonds. • Leverage: the Net Financial Debt / EBITDA ratio stood at 1.58x, improving from 1.66x in 3Q25 as EBITDA growth outpaced the increase in net financial debt, and Net Financial Debt plus IFRS 16 / EBITDA at 2.35x (2.47x in 4Q25). IV. Free Cash Flow Ch$ million 9M26 9M25 Y/Y Y/Y % Cash at the beginning of the period 249.428 273.778 (24.350) (8,9%) EBITDA 662.603 609.840 52.763 8,7% % over Revenues 28,2% 27,8% 0,5 p.p.
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9 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 IFRS 16 effect (141.343) (132.723) (8.620) 6,5% EBITDA after leases 521.260 477.118 44.143 9,3% Changes in working capital (86.016) (24.191) (61.824) 255,6% Capex (336.790) (320.828) (15.962) 5,0% Others (7.904) (8.472) 568 (6,7%) Cash flow from operations 90.551 123.626 (33.076) (26,8%) % over Revenues 3,9% 5,6% (1,8) p.p. Net financial cost (70.145) (92.041) 21.896 (23,8%) Taxes & others (16.259) (21.390) 5.131 (24,0%) Cash flow before dividends 4.147 10.196 (6.049) (59,3%) Dividends (42.282) (38.960) (3.322) 8,5% Cash flow before financing activities (38.135) (28.764) (9.371) 32,6% Cash flow from financing activities 45.168 (5.120) 50.288 (982,2%) Net cash flow 7.032 (33.884) 40.917 (120,8%) Cash at the end of the period 256.460 239.894 16.567 6,9% Note: IFRS 16 effect corresponds to lease payments deducted from EBITDA to arrive at EBITDA after leases. “% over Revenues” variations are expressed in percentage points. Cash corresponds to management cash and includes financial assets. V. Chile: Financial Results and Operating Figures Ch$ million 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change Total Revenue 496.278 474.958 4,5% 21.320 1.494.618 1.407.792 6,2%
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10 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 Ch$ million 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change Chile Mobile & Fixed Revenue 461.209 443.122 4,1% 18.087 1.390.921 1.307.974 6,3% Mobile Revenues 340.607 322.459 5,6% 18.147 1.034.070 952.074 8,6% Mobile Service Revenue 239.848 229.796 4,4% 10.052 717.981 675.222 6,3% Mobile Equipment Revenue 100.759 92.663 8,7% 8.096 316.089 276.852 14,2% Fixed & ICT Revenue 120.602 120.662 (0,0%) (60) 356.852 355.900 0,3% Wholesales Revenue & others 14.949 16.413 (8,9%) (1.465) 44.542 53.464 (16,7%) Other Revenues - Non core 20.120 15.423 30,5% 4.697 59.155 46.354 27,6% Operating Costs 443.304 421.903 5,1% 21.401 1.342.718 1.267.758 5,9% EBITDA 149.217 144.624 3,2% 4.592 436.021 410.907 6,1% EBITDA Margin % 30,1% 30,4% (0,4) p.p. 29,2% 29,2% (0,1%) EBITDAaL 122.967 119.747 2,7% 3.221 359.154 339.242 5,9% EBITDAaL Margin % 24,8% 25,2% (1,7%) (0,4) p.p. 24,0% 24,1% (0,3%) Depreciation, Amortization and Impairment 96.243 91.570 5,1% 4.674 284.121 270.873 4,9% Operating Income (EBIT) 52.973 53.055 (0,2%) (81) 151.900 140.033 8,5% CAPEX 74.661 67.341 10,9% 7.320 209.723 207.354 1,1% CAPEX / Revenues 15,0% 14,2% 0.8 p.p 14,0% 14,7% (0.7) p.p 3Q26 vs 3Q25: Chile total revenues reached Ch$ 496.3 billion, up 4.5% YoY, mainly driven by mobile revenue growth. o Mobile revenues reached Ch$ 340.6 billion, up 5.6% YoY, with equipment growing faster than services. o Mobile service revenues reached Ch$ 239.8 billion, up 4.4% YoY. The increase is a price and volume effect: service revenue grew on a postpaid voice base that expanded 3.5%, together with increase of blended ARPU. o Mobile equipment revenues reached Ch$ 100.8 billion, up 8.7% YoY, reflecting a value effect where fewer handsets were sold at a materially higher average unit price, together with higher equipment financing income on greater financing penetration. o Fixed & ICT revenues from integrated voice, data and Internet networks for the business segment, together with digital and IT services and the 'Entel Hogar' residential offering, reached Ch$ 120.6 billion, essentially stable YoY . The strong growth in "Entel Hogar Fibra" (+1 8.0% YoY), digital
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11 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 businesses (+12.3% YoY), partially offset the reduction in IT services ( -6.0% YoY) and wireless residential service (-40.3% YoY). o Wholesale revenues reached Ch$ 14.9 billion, down 8.9% YoY due to lower fixed services revenue in the traffic business, partially offset by higher mobile revenue from national roaming.2 • EBITDA reached Ch$ 149.2 billion, up 3.2% YoY, with an EBITDA margin of 30.1%, down 0.4 p.p. from 30.4% in 3Q25. o Mobile EBITDA reached Ch$ 137.2 billion (+3.0% YoY), driven by (i) growth in service revenue (+4.4% YoY) sustained by increase in blended ARPU (+4.2% YoY) and a larger postpaid voice base (+3.5% YoY), (ii) lower blended churn ( -0.3 p.p., to 2.0%), and (iii) a stronger handset margin, including higher equipment financing income, partially offset by the greater weight of handset sales in the revenue mix. o Fixed EBITDA rose to Ch$ 11.8 billion (+21.7% YoY) from Ch$ 9.7 billion in 3Q25, an improvement driven by the advance of fiber (fiber RGUs +28.2% YoY). • EBIT reached Ch$ 53.0 billion, essentially stable YoY ( -0.2%) affected by the costs of collective bargaining negotiations in 3Q26 • Chile CAPEX reached Ch$ 74.7 billion, up 10.9% YoY, equivalent to 15.0% of revenues versus 14.2% in 3Q25. 9M 2026 vs 9M 2025: Revenues in the first nine months of 2026 reached Ch$ 1,494.6 billion, increasing 6.2% versus the same period of 2025. By service, mobile revenue grew 8.6%, with service revenue up 6.3%, driven by higher blended ARPU and a larger postpaid customer base, and handset revenue up 14.2%, on a higher average equipment unit price and higher equipment financing income from great er financing penetration. Fixed and ICT revenue rose 0.3%, while wholesale revenue fell 16.7%. EBITDA in the first nine months of 2026 reached Ch$ 436.0 billion, up 6.1% versus the same period of 2025. EBITDA growth was driven by stronger mobile EBITDA (+6.6% YoY), supported by higher handset sales and margin, and by an increase in fixed EBITDA (+12.1% YoY). EBITDA margin reached 29.2%, and operating result was Ch$ 151.9 billion, up 8.5%. CAPEX in the first nine months of 2026 reached Ch$ 209.7 billion, up 1.1% versus the same period of 2025, equivalent to 14.0% of revenues versus 14.7% in 9M25. Investment was focused mainly on mobile networks (5G and 4G) and on the fiber deployment. 2 Chile wholesale revenue in this section differs from the Consolidated Financial Results because it includes services sold to Entel's Peruvian operation, which are eliminated on consolidation.
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12 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 Mobile Customers (th.) 3Q26 3Q25 % Change Abs. Change 2Q26 % Change Postpaid Voice 6.744 6.516 3,5% 228 6.689 0,8% Prepaid Voice 1.727 2.013 (14,2%) (286) 1.777 (2,8%) M2M & IOT 1.810 1.657 9,2% 153 1.772 2,2% Total Mobile Customers (th.) 10.282 10.186 0,9% 96 10.238 0,4% ARPU Blended (CLP) 10.236 9.826 4,2% 411 10.324 (0.8%) ARPU Postpaid 12.072 11.868 3,6% 232 12.256 (1,5%) ARPU Prepaid 1.733 1.873 (7,5%) (140) 1.766 (1,8%) Blended Churn % 2,0% 2,2% (11,7%) (0,3%) 2,4% (16,8%) Churn Postpaid 1,4% 1,4% (1,7%) (0,02%) 1,4% (2,5%) Churn Prepaid 3,2% 4,0% (20,3%) (0,8%) 4,8% (34,2%) Blended MOU 212 238 (11,0%) (26) 214 (1,1%) Postpaid Effective GOU 37 30 22,0% 7 36 0,7% 4G Users (th.) 3.414 4.206 (18.8%) (792) 3.584 (4.8%) 5G Users (Th.) 4.479 3.572 25.4% 907 4.295 4.3% Fixed RGU (th.) 3Q26 3Q25 % Change Abs. Change 2Q26 % Change Fiber Internet 542 422 28,2% 119 515 5,2% Telephony 18 19 (4,5%) (1) 19 (1,5%) TV 123 81 51,0% 41 112 9,7% OTT (Bundled) 42 44 (5,1%) (2) 42 (0,6%) Wireless 36 79 (54,2%) (43) 40 (9,4%) Total RGU 761 646 17,8% 115 728 4,6% FTTh 3Q26 3Q25 % Change Abs. Change 2Q26 % Change ARPU 22.281 23.477 (5,1%) 1,195 22.323 (0,2%) Churn (2,6%) (3,1%) (16,1%) 0,5 (2,6%) (0,0%) • Mobile customer base reached 10,281,750 subscribers, up 0.9% YoY (+95,895) and 0.4% QoQ (+43,875), with net additions in postpaid (+381.5k, +4.7% YoY) explained by net additions in voice (+228.3k, +3.5%
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13 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 YoY). Growth came from a value proposition that stands out in the market: a best -in-class network, which now includes direct-to-cell satellite coverage (Entel was the first operator in Latin America to launch it), a better customer experience and a broader benefits ecosystem. Prepaid voice declined 14.2% YoY (-285.6k), in line with the declining trend of the prepaid business. In the quarter, postpaid voice added 54.8k (+0.8%) and prepaid voice decreased 49.7k (-2.8%). • Blended mobile service ARPU based on Subtel data, which excludes M2M & IoT connections, 1reached Ch$ 10,236 in 3Q26, a +4.2% increase compared to Ch$ 9,826 in 3Q25, explained by postpaid ARPU (+3.6% YoY) supported by the price adjustments implemented during 1Q26, partially offset by prepaid ARPU (-7.5% YoY. On a sequential basis blended ARPU decreased -0.8% versus 2Q26, with postpaid down -1.5% and prepaid down -1.8%. While fixed access charge increases implemented provided a positive pricing tailwind, this was offset by capture discounts deployed due to intensified competitive dynamics. • Blended churn rate reached 2.0% in 3Q26, down 0.3 p.p. from 2.2% in 3Q25 and 0.4 p.p. from 2.4% in 2Q26, on lower prepaid churn (3.2%; -0.8 p.p. YoY and -1.6 p.p. QoQ), while postpaid churn remained stable at 1.4%, with convergent customers posting the lowest churn in the Consumer segment (B2C) (1.6%). • Fixed connections (RGU) recorded 760,813 RGUs in 3Q26, up 17.8% YoY and 4.6% QoQ, driven by continued expansion in fiber internet (+28.2% YoY, +5.2% QoQ), reaching 541,734 connections, explained by stronger commercial execution and improved retention, supported by the expansion of the convergent customer base, together with the growth of TV (+ 51.0% YoY, +9.7% QoQ). FTTH churn improved, declining from 3.1% to 2.6% (-16.1% YoY), while remaining stable QoQ, reflecting a healthier customer mix; FTTH ARPU stood at Ch$ 22,281 declining 5.1% YoY and 0.2% QoQ, mainly explained by acquisition cost amid intensified competitive dynamics. These trends offset declines in wireless services as customers migrate toward higher-quality technologies. VI. Business Development by Segments3 i. Consumer Segment (B2C) – Chile Mobile Customers (th.) 3Q26 3Q25 % Change Abs. Change 2Q26 % Change Postpaid Voice 5.386 5.226 3,1% 160 5.355 0,6% Prepaid Voice 1.727 2.012 (14,2%) (285) 1.777 (2,8%) M2M & IoT 8 9 (16,3%) (1) 8 (4,6%) 3 Results by segment includes intercompany revenue.
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14 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 Mobile Customers (th.) 3Q26 3Q25 % Change Abs. Change 2Q26 % Change Total 7.120 7.247 (1,8%) (127) 7.139 (0,3%) Fixed RGU (Th.) 3Q26 3Q25 % Change Abs. Change 2Q26 % Change Fiber Internet 518 408 26,9% 110 494 4,9% Telephony 18 19 (5,0%) (1) 18 (1,7%) TV 118 79 49,8% 39 108 9,3% OTT (Bundled) 41 43 (5,6%) (2) 41 (0,8%) Wireless 36 78 (54,3%) (43) 39 (9,4%) Total 730 627 16,5% 103 700 4,3% • The total mobile customer base in the Consumer segment reached 7,120,275 customers in 3Q26, down 1.8% YoY (-127.1k) and 0.3% QoQ (-19.0k). • Postpaid continues to expand at a healthy pace, reaching 5.4 million customers (+3.1% YoY) and adding 159.8k subscribers, driven by a differentiated value proposition: best -in-class network (including direct-to-cell satellite coverage), improved customer experience , and a strengthened benefits ecosystem. During the quarter net additions totaled +31.0k (+0.6% QoQ), while monthly postpaid churn remained stable at 1.87% with convergent customers posting the lowest churn (1.56%). • Prepaid net disconnections totaled -285.4k (-14.2% YoY, to 1,726,879 customers), in line with the declining trend of the prepaid business. During the quarter disconnections totaled -49.6k (-2.8% QoQ). • Entel Hogar RGUs for "Entel Hogar" in the residential segment reached 729,959 (including OTT TV), up 16.5% YoY (+103.2k), driven by growth in fiber connections, which reached 517,729 (+26.9% YoY, +109.9k). During the quarter fiber connections increased +24.1k (+4.9% QoQ) a nd total RGUs +29.9k (+4.3% QoQ). Entel Hogar's performance in 3Q26 reflected the continued step-up in commercial execution and improved customer retention supported by the expansion of the convergent customer base, which increased its share of the total base from 57.3% to 60.9% YoY. In parallel, churn improved, with total churn declining from 3.1% to 2.6% (-16.1%) evidencing a healthier mix. Ch$ million 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change Revenue 330.849 309.750 6,8% 21.099 999.334 913.447 9,4% Mobile Business 293.846 276.212 6,4% 17.635 892.403 815.600 9,4% Services 198.330 189.914 4,4% 8.416 593.295 560.119 5,9% Postpaid 190.262 179.971 5,7% 10.290 567.381 527.841 7,5%
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15 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 Ch$ million 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change Prepaid 8.069 9.943 (18,8%) (1.874) 25.914 32.278 (19,7%) Handset 83.558 76.121 9,8% 7.437 262.429 226.431 15,9% Other business 11.958 10.177 17,5% 1.781 36.679 29.051 26,3% Fixed services 37.003 33.538 10,3% 3.465 106.931 97.847 9,3% Ch$ million 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change EBITDA 106.051 100.135 5,9% 5.915 308.188 285.132 8,1% EBITDA Margin 32,1% 32,3% (0,3) p.p. 30,8% 31,2% (1,2%) Mobile Business 107.961 104.874 2,9% 3.088 319.728 299.287 6,8% Mobile Margin 36,7% 38,0% (1,2%) 35,8% 36,7% Fixed Services (1.911) (4.738) (59,7%) 2.828 (11.540) (14.155) (18,5%) Fixed Margin (5,2%) (14,1%) 9,0% (10,8%) (14,5%) • B2C Chile total revenues reached Ch$ 330.8 billion in 3Q26, a 6.8% YoY increase. The main growth driver was the Mobile business, which contributed Ch$ 293.8 billion (+6.4% YoY), accounting for roughly 84% of the segment's total growth. Within Mobile, Service revenues grew 4.4% YoY, supported by expansion of the postpaid subscriber base (+3.1% YoY) and improved ARPU — postpaid revenues rose 5.7% YoY while prepaid declined 18.8% YoY; meanwhile, Handset revenues expanded 9.8% YoY, reflecting a value effect where fewer handsets were sold at a materially higher average unit price, together with higher equipment financing income on greater financing penetration. Fixed Services reached revenues of Ch$ 37.0 billion (+10.3% YoY), led by Entel Hogar Fibra (+18.0%YoY), which now represents 97. 4% of segment fixed revenues , which grew on a larger customer base despite promotional discounts associated with strong commercial activity, partially offset by the decline of the legacy wireless service (-72.8% YoY). • B2C Chile EBITDA reached Ch$ 106.1 billion in 3Q26, up 5.9% YoY. The EBITDA margin was 32.1%, contracting 0.3 p.p. versus 32.3% in 3Q25. o Mobile EBITDA reached Ch$ 108.0 billion, increasing 2.9% YoY. Gross profit expanded on higher service revenue alongside ARPU increases and a stronger handset margin, including higher equipment financing income. In relative terms, Mobile EBITDA margin contracted by 1.2 p.p. (from 38.0% to 36.7%), explained by higher indirect costs against a high comparison base, as the year- ago period benefited from a one-off effect (excluding this effect EBITDA Mg in 3Q25 would have been 36.8%.) o Fixed EBITDA reached Ch$ -1.9 billion in 3Q26, improving from Ch$ -4.7 billion in 3Q25 (+59.7% YoY), with the EBITDA margin expanding 9.0 p.p., from -14.1% to -5.2% of revenues. The
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16 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 improvement was driven by the growth of Entel Hogar Fibra, which expanded gross margin, together with lower TV content costs. 9M 2026 vs 9M 2025: Revenues in the first nine months of 2026 reached Ch$ 999.3 billion, up 9.4% versus the Ch$ 913.4 billion of the same period of 2025, reflecting the same mobile-led, price-driven growth recorded in the quarter. Mobile business revenue advanced 9.4%, with handset revenue up 15.9% and service revenu e up 5.9%, while fixed services revenue rose 9.3%. EBITDA in the first nine months of 2026 reached Ch$ 308.2 billion, up 8.1% versus the Ch$ 285.1 billion of the same period of 2025, driven by the mobile business through gross margin, with Mobile EBITDA up 6.8% and Fixed EBITDA improving to Ch$ -11.5 billion from Ch$ -14.2 billion. EBITDA margin reached 30.8%, down 0.4 p.p. from 31.2%. ii. Corporate and SME Segment (B2B) – Chile Mobile Customers (th.) 3Q26 3Q25 % Change Abs. Change 2Q26 % Change Postpaid Voice 1.358 1.290 5,3% 69 1.335 1,8% BAM and others 121 125 (3,2%) (4) 121 (0,5%) Managed Connectivity (Entel Digital) 1.683 1.524 10,4% 158 1.643 2,4% Total 3.161 2.938 7,6% 223 3.099 2,0%
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17 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 Fixed RGU (Th.) 3Q26 3Q25 % Change Abs. Chang e 2Q26 % Change Fiber 24 15 64,5% 9 21 11,9% TV, Telephony & OTT 7 4 59,6% 2 6 13,4% Wireless 0 0 0,0% - 0 0,0% Total 31 19 62,8% 12 28 12,1% The mobile customer base in the Corporate & SME segment reached 3,161k customers in 3Q26, increasing 7.6% YoY (+223k) and 2.0% QoQ (+62k). Growth was driven by managed connectivity from Entel Digital (M2M and IoT) (+10.4% YoY, +2.4% QoQ) and postpaid voice (+5.3% YoY, +1.8% QoQ), partially offset by BAM and other connections (-3.2% YoY, -0.5% QoQ) Ch$ million 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change Revenue 151.951 150.787 0,8% 1.164 453.364 447.108 1,4% Mobile Business 64.805 60.787 6,6% 4.019 194.271 181.350 7,1% Mobile services 42.962 42.003 2,3% 959 128.762 124.036 3,8% Handset 21.654 18.644 16,1% 3.009 64.960 56.984 14,0% Other services 189 140 35,7% 50 550 330 66,5% Fixed services 87.146 90.000 (3,2%) (2.855) 259.093 265.758 (2,5%) Ch$ million 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change EBITDA 36.880 37.367 (1,3%) (487) 108.313 101.523 6,7% EBITDA Margin 24,3% 24,8% (0,5) p.p. 23,9% 22,7% 5,2% Mobile Business 24.778 25.211 (1,7%) (432) 74.472 71.967 3,5% Mobile Margin 38,2% 41,5% (3,3) p.p 38,3% 39,7% Fixed Services 12.101 12.156 (0,5%) (55) 33.841 29.556 14,5% Fixed Margin 13,9% 13,5% 0,4% 13,1% 11,1% • B2B Chile total revenues reached Ch$ 152.0 billion, up 0.8% YoY. • Mobile business revenue increased 6.6% YoY (+Ch$ 4,019 million), explained by handset revenue (+16.1%, +Ch$ 3,009 million) and mobile service revenue (+2.3%, +Ch$ 959 million). The increase in mobile service revenue was mainly driven by Affinity clients (voice and mobile data), up Ch$ 1,138 million on a 20.5% larger average customer base, and by roaming, up Ch$ 198 million. These effects were partially offset by lower revenue from Business and Corporate clients, mainly BAM Business on an 18.3% decline in its average customer base, and by service disconnection and reconnection
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18 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 (-Ch$ 78 million). Handset revenue growth was mainly explained by higher interest revenue, higher handset sales activity and fewer 100% discounts on the initial payment. • Fixed services revenue decreased 3.2% YoY, as the 6.8% decline in Corporate and SME fixed revenue was partially offset by 3.2% growth in Entel Digital. The Corporate and SME decline reflected lower telecommunications equipment revenue, on reduced activity in telco equipment and coverage infrastructure projects, and lower fixed service revenue, as 3Q25 benefited from one- off back-billing. • B2B EBITDA reached Ch$ 36.9 billion, decreasing 1.3% YoY. The EBITDA margin was 24.3%, contracting 0.5 p.p. compared with 24.8% in 3Q25. • Mobile Business EBITDA reached Ch$ 24.8 billion, decreasing 1.7% YoY. The mobile margin was 38.2%, contracting 3.3 p.p. compared with 41.5% in 3Q25, reflecting higher service and equipment costs, due to higher costs of devices sold to enterprise clients, and higher commercial and operating expenses, due to a reallocation of personnel costs between the Mobile and Fixed businesses. • Fixed Services EBITDA reached Ch$ 12.1 billion, essentially stable YoY (-0.5%) from Ch$ 12.2 billion in 3Q25. 9M 2026 vs 9M 2025: Revenues in the first nine months of 2026 reached Ch$ 453.4 billion, up 1.4% versus the Ch$ 447.1 billion of the same period of 2025, with mobile business revenue up 7.1% and fixed services revenue down 2.5%. EBITDA in the first nine months of 2026 reached Ch$ 108.3 billion, up 6.7% versus the Ch$ 101.5 billion of the same period of 2025, with an EBITDA margin of 23.9%, 1.2 p.p. above the 22.7% of 9M25. ii.1 Corporate and SME Segment (B2B Connectivity) - Chile • Corporate and SME B2B Chile total revenues reached Ch$ 118.4 billion, up 0.1% YoY. o Mobile business revenue increased 6.6% YoY, explained by handset revenue (+16.1%, +Ch$ 3,009 million) and mobile service revenue (+2.3%, +Ch$ 959 million). The increase in mobile service revenue was mainly driven by Affinity clients (voice and mobile data), up on a 20.5% larger average customer base, and by roaming. The se effects were partially offset by lower revenue from Business and Corporate clients. Handset revenue growth was mainly explained by higher handset sales activity, higher interest income and fewer 100% discounts. o Fixed revenues decreased 6.8% YoY reflecting lower telecommunications equipment revenue (- Ch$ 2,234 million), on reduced telco equipment and coverage infrastructure activity, and lower fixed service revenue, as 3Q25 benefited from one-off back-billing.
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19 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 Mobile Customers (th.) 3Q26 3Q25 % Chang e Abs. Change 2Q26 % Chang e Postpaid Voice 1.358 1.290 5,3% 69 1.335 1,8% BAM and others 121 125 (3,2%) (4) 121 (0,5%) Total 1.479 1.414 4,6% 65 1.456 1,6% Fixed RGU (Th.) 3Q26 3Q25 % Chang e Abs. Chan ge 2Q26 % Chang e Fiber 24 15 64,5% 9 21 11,9% TV, Telephony & OTT 7 4 59,6% 2 6 13,4% Wireless 0 0 0,0% - 0 0,0% Total 31 19 62,8% 12 28 12,1% Ch$ million 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change Revenue 118.432 118.307 0,1% 125 355.330 351.039 1,2% Mobile Business 64.805 60.787 6,6% 4.019 194.271 181.350 7,1% Fixed services 53.627 57.520 (6,8%) (3.893) 161.058 169.689 (5,1%) ii.2 Corporate and SME Segment (Entel Digital) - Chile • Entel Digital B2B Chile total revenues reached Ch$ 33.5 billion, up 3.2% YoY. Digital Solutions revenue grew 12.3% to Ch$ 17.4 billion, more than offsetting a 5.1% decline in IT managed services, to Ch$ 16.2 billion. Mobile Customers (th.) 3Q26 3Q25 % Chang e Abs. Chang e 2Q26 % Chang e Managed Connectivity 1.683 1.524 10,4% 158 1.643 2,4% Total 1.683 1.524 10,4% 158 1.643 2,4%
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20 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 Ch$ million 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change Revenue 33.519 32.480 3,2% 1.039 98.034 96.069 2,0% IT manage services 16.162 17.024 (5,1%) (862) 48.230 48.261 (0,1%) Digital Solutions 17.356 15.456 12,3% 1.901 49.804 47.808 4,2% VII. Peru: Financial Results and Operating Figures3 US$ Thousand 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change Total Revenue 308.798 290.489 6,3% 18.310 923.819 863.593 7,0% Peru Mobile & Fixed Revenue 303.152 286.220 5,9% 16.932 907.593 849.806 6,8% Mobile Revenues 292.506 276.517 5,8% 15.990 876.531 820.385 6,8% Mobile Service Revenue 198.274 188.790 5,0% 9.484 586.074 558.494 4,9% Mobile Equipment Revenue 94.232 87.727 7,4% 6.505 290.457 261.891 10,9% Fixed & ICT Revenue 10.646 9.703 9,7% 943 31.062 29.421 5,6% WholeSale Revenue & Others 2.012 2.119 (5,0%) (106) 6.156 6.523 (5,6%) Other Revenues - Non core 3.634 2.150 69,0% 1.484 10.070 7.263 38,6%
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21 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 US$ Thousand 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change Operating Costs 287.892 271.014 6,2% 16.878 865.245 818.587 5,7% EBITDA 84.759 73.848 14,8% 10.911 246.697 219.040 12,6% EBITDA Margin % 27,4% 25,4% 8,0% 2,0 p.p. 26,7% 25,4% 5,3% EBITDAaL 62.027 51.654 20,1% 10.372 176.892 153.224 15,4% EBITDAaL Margin % 20,1% 17,8% 13,0% 2,3 p.p. 19,1% 17,7% 7,9% Depreciation, Amortization and Impairment 63.853 54.373 17,4% 9.480 188.124 174.035 8,1% Operating Income (EBIT) 20.906 19.475 7,3% 1.431 58.574 45.006 30,1% CAPEX 47.640 31.331 52,1% 16.310 138.990 125.336 10,9% CAPEX / Revenues 15,4% 10,8% 15,0% 14,5% Peru figures converted at the average exchange rate of the period 3Q26 USD3.43. 3Q26 vs 3Q25: • Peru total revenues reached US$ 308.8 million, increasing 6.3% YoY, driven mainly by growth in mobile revenue (+5.8%), together with fixed revenue (+9.7%). • Mobile revenues increased 5.8% YoY due to 7.4% growth in handset revenues and 5.0% in service revenue. Mobile service revenue grew 5.0% YoY, driven by growth in the postpaid customer base (+13.2% YoY) and partially offset by lower prepaid revenue, while commercial momentum continued to build through presential (in - store) channels that have replaced telesales and ambulatory chann els. The shift produces higher-quality additions — with lower churn (blended churn down to 4.0% from 5.4%) supported by a focus on high-quality sales and an efficient, competitive channel mix with greater in -person participation, leveraged by significant improvements in network capacity, coverage, and quality. Mobile Equipment Revenue amounted to US$ 94.2 million, growing 7.4% YoY. The increase in equipment revenue mainly reflected a higher average handset ticket, driven by a higher -value device. • Fixed & ICT revenue increased 9.7% YoY to US$ 10.6 million, supported by higher digital license sales following the creation of a dedicated sales force for the local digital unit. The commercial rollout of fiber began in October 2026, following the agreement signed with Wi-Net in December 2025, and the first contribution to growth in this segment is expected in 4Q26. • Wholesale Revenue & Others reached US$ 2.0 million, declining 5.0% YoY. EBITDA reached US$ 84.8 million, up 14.8% YoY, with margin expansion of 2.0 p.p. (27.4% vs 25.4% in 3Q25). Growth was driven by (i ) mobile service revenue (+5.0% YoY) sustained by strong postpaid subscriber growth (+13.2% YoY), (ii) lower blended churn ( -1.4 p.p., to 4.0%), and (iii) operating efficiencies from the
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22 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 migration toward presential (in-store) channels with better unit economics, which lowered commercial channel costs, together with network initiatives that kept energy and deployment costs from growing in line with traffic. 9M 2026 vs 9M 2025: Revenues in the first nine months of 2026 reached US$ 923.8 million, up 7.0% versus the same period of 2025, led by mobile revenue (+6.8%), explained by handset revenue growth (+10.9%) and service revenue (+4.9%), with fixed revenue up 5.6%. EBITDA in the first nine months of 2026 reached US$ 246.7 million, up 12.6% versus the same period of 2025, with an EBITDA margin of 26.7%, 1.3 p.p. above the 25.4% of 9M25. CAPEX in the first nine months of 2026 reached US$ 139.0 million, up 10.9% versus the same period of 2025, equivalent to 15.0% of revenues versus 14.5% in 9M25. Mobile Customers (th.) 3Q26 3Q25 Change % Abs. Change 2Q26 Change % Postpaid Voice 5.415 4.784 13,2% 631 5.271 2,7% Prepaid Voice 4.304 4.905 (12,3%) (601) 4.028 6,9% M2M & IOT 775 614 26,1% 160 717 8,1% Total Mobile Customers (th.) 10.493 10.303 1,8% 190 10.015 4,8% ARPU (USD) 5,9 5,9 1,0% 0 5,9 1,5% ARPU Postpaid 9,0 9,4 (4,0%) (0) 9,1 (1,0%) ARPU Prepaid 2,2 2,2 (0,5%) (0) 2,2 (1,8%) Blended Churn % 4,0% 5,4% (25,6%) 4,8% (16,2%) Churn Postpaid 3,4% 3,7% (6,9%) 3,4% 1,0% Churn Prepaid 5,0% 7,3% (32,4%) (1,9%) 6,8% (27,6%) • Total mobile customer base closed 3Q26 at 10,493,411 customers, up 1.8% YoY (+190.1k) and 4.8% QoQ (+478.1k). Postpaid voice reached 5,414,535 customers, a 13.2% YoY increase (+630.9k) and +2.7% QoQ (+144.0k), while prepaid voice declined 12.3% YoY (-601.2k) to 4,304,240 customers, although it rose 6.9% in the quarter (+276.1k). The postpaid base expanded on solid commercial execution through presential channels, supported by sales of new lines and additional lines in a highly competitive portability environment. The prepaid contraction reflects industry-wide security-driven regulations restricting wholesale and street-channel SIM distribution. • Blended ARPU, stood at US$ 5.9, up 1.0% YoY, as the shift of the customer mix toward postpaid and additional lines (postpaid voice +13.2% YoY vs. prepaid voice -12.3% YoY) offset lower ARPU in both categories explain by competitive pressure on promotional discounts. Postpaid ARPU stood at US$
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23 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 9.00, declining 4.0% YoY and 1.0% QoQ. Prepaid ARPU stood at US$ 2.15, broadly stable YoY (-0.5%) and down 1.8% QoQ. • Blended churn improved to 4.0% (-1.4 p.p. YoY and -0.8 p.p. QoQ from 4.8%), with postpaid churn dropping to 3.4% and prepaid churn to 5.0% (-1.9 p.p. QoQ), supported by a significant improvement in involuntary churn, the higher quality of additions through presential channels and the anti-spam law that reduced port-out activity. • Total Fixed RGUs closed the quarter at 30,835, down 19.5% YoY and 4.0% QoQ, driven almost entirely by the contraction in the Wireless portfolio as the legacy base continues to run off. Fixed RGU (Th.) 3Q26 3Q25 Chang e % Abs. Chang e 2Q26 Change % Wireless 14 22 (36,9%) (8) 15 (10,7%) Fiber 17 17 3,4% 1 17 2,1% Total RGU 31 38 (19,5%) (7) 32 (4,0%) VIII. Segment Revenue and EBITDA Financial Information4 Ch$ million 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change Consumers (B2C) - Chile Revenue 330.849 309.750 6,8% 21.099 999.334 913.447 9,4% EBITDA 106.051 100.135 5,9% 5.915 308.188 285.132 8,1% EBITDA Margin (%) 32,1% 32,3% (0,8%) (0,3) p.p. 30,8% 31,2% (1,2%) Corporate and SME (B2B) - Chile Revenue 151.951 150.787 0,8% 1.164 453.364 447.108 1,4% EBITDA 36.880 37.367 (1,3%) (487) 108.313 101.523 6,7% EBITDA Margin (%) 24,3% 24,8% (2,1%) (0,5) p.p. 23,9% 22,7% 5,2% Wholease & Others - Chile
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24 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 Ch$ million 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change Revenue 14.560 15.523 (6,2%) (963) 44.810 50.363 (11,0%) EBITDA 6.138 5.427 13,1% 712 19.201 20.962 (8,4%) EBITDA Margin (%) 42,2% 35,0% 20,6% 7,2 p.p. 42,8% 41,6% 3,0% Extraordinary and Intercompany adjustments Revenue (1.082) (1.102) (1,8%) 20 (2.890) (3.127) (7,6%) EBITDA 148 1.695 (91,3%) (1.547) 318 3.290 (90,3%) Chile Mobile & Fixed Services (includes others) Revenue 496.278 474.958 4,5% 21.320 1.494.618 1.407.792 6,2% EBITDA 149.217 144.624 3,2% 4.592 436.021 410.907 6,1% EBITDA Margin (%) 30,1% 30,4% (1,3%) (0,4) p.p. 29,2% 29,2% (0,1%) Peru Mobile & Fixed Services (includes others) Revenue 290.115 268.796 7,9% 21.318 839.260 775.992 8,2% EBITDA 79.602 68.331 16,5% 11.271 224.172 196.766 13,9% EBITDA Margin (%) 27,4% 25,4% 7,9% 2,0 p.p. 26,7% 25,4% 5,3% Call Center Chile & Peru (includes intercompany) Revenue 17.962 19.956 (10,0%) (1.994) 54.326 59.696 (9,0%) EBITDA 813 672 21,0% 141 2.655 2.226 19,3% EBITDA Margin (%) 4,5% 3,4% 34,4% 1,2 p.p. 4,9% 3,7% 31,1% Extraordinary and Intercompany adjustments Revenue (14.069) (16.157) (12,9%) 2.088 (41.809) (48.293) (13,4%) EBITDA (151) 0 n.m. (151) (245) (58) 322,9% Consolidated Results Revenue 790.285 747.553 5,7% 42.732 2.346.396 2.195.186 6,9% EBITDA 229.480 213.626 7,4% 15.854 662.603 609.840 8,7% EBITDA Margin (%) 29,0% 28,6% 1,6% 0,5 p.p. 28,2% 27,8% 1,7% EBIT 72.258 70.665 2,3% 1.593 204.626 179.148 14,2% EBIT Margin 9,1% 9,5% (3,3%) (0) 8,7% 8,2% 6,9%
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25 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 IX. EBITDA Breakdown by Services4 Ch$ million 3Q26 3Q25 % Change Abs. Change 9M26 9M25 % Change EBITDA 229.480 213.626 7,4% 15.854 662.603 609.840 8,7% Mobile Services Chile (a) 137.226 133.196 3,0% 4.029 408.083 382.974 6,6% Fixed Services (b) 11.843 9.733 21,7% 2.110 27.619 24.643 12,1% Others (C) 810 2.367 (65,8%) (1.557) 2.729 5.458 (50,0%) Peru Mobile and Fixed Services 79.602 68.331 16,5% 11.271 224.172 196.766 13,9% (a): includes wholesales mobile services, (b): includes wholesales fixed services, (c): Others: Call Center & Others. About Entel Entel is a company with a 62 -year history and is one of the largest publicly traded corporations on the Santiago Stock Exchange. It is a leader in technology and telecommunications, operating in Chile and Peru, with a combined subscriber base exceeding 20.7 million mobile users and consolidated annual revenues of Ch$ 3,032 billion as of December 2025. The company provides mobile and fixed connectivity services, along with a wide range of IT and digital services for individuals, businesses, and large corporations. In each of these services, Entel delivers simple and effi cient experiences, supported by a robust state-of-the-art infrastructure and a strong brand image and customer service. X. Glossary of terms ARPU: Average Service Revenue per User (presented on a monthly basis). BAFI: Fixed Wireless Broadband. BPO: Business Process Outsourcing. CAPEX: Capital Expenditures. Churn: Disconnection Rate; presented on a monthly basis. Consumerization: possibility to access personal content and/or applications, using mobile access contracted by the enterprise. DLD: Domestic Long Distance. Data mobile revenue: includes Internet mobile and MBB revenues. EBIT: Operating earnings. EBITDA: Operating earnings before interest, taxes, depreciation, amortization and fixed asset impairment. EDGE: Enhanced Data rates for GSM Evolution; technology that provides GSM the capacity to handle data services. EPS: Earnings per Share. 4 a): includes wholesales mobile services, (b): includes wholesales fixed services, (c): Others: Call Center & Others.
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26 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 GAAP: Generally Accepted Accounting Principles. GOU: Gigabyte of Use per subscriber; the ratio of data traffic in a given period to the average number of subscribers during the same period; presented on a monthly basis. EFFECTIVE GOU: Gigabyte of Use per subscriber; the ratio of data traffic in a given period to the average number of subscribers that use the service during the same period; presented on a monthly basis. GPON: Gigabite Passive Optical Network. GPRS: General Packet Radio Service; enables GSM networks to offer higher capacity, Internet-based content and packet-based data services; a second-generation technology. GSM: Global System for Mobile communications. HSPA: High Speed Packet Access. A family of high-speed 3G digital data services that use GSM technology. The service works with HSPA mobile phones, as well as laptops and portable devices with HSPA modems. HPPTT: High Performance Push to Talk. HSDPA: High Speed Downlink Packet Access; an enhanced (third generation) mobile technology in the High - Speed Packet Access (HSPA) family. HSDPA + Dual Carrier: standard based on HSPA that is defined in 3GPP UMTS release 8, which enables mobile broadband speeds of up to 22 Mbps iDEN. iDEN: Integrated Digital Enhanced Network. Motorola-developed technology for an integrated radio system called MIRS (Motorola Integrated Radio System). IFRS: International Financial Reporting Standards. ILD: International Long Distance. IT: Information Technology. LIS: Lines in Service. LTE: Long-term Evolution, the fourth generation of radio technologies designed to increase the capacity and speed of mobile telephone networks. K: denotes thousand. M2M: Machine to Machine, includes the automation of communication processes between machines (Machine to Machine), between mobile devices and machines (Mobile to Machine), and between man and machines (Man to Machine). MBB: Mobile broadband including M2M data cards. Mobile Service Chile Revenue: Includes mobile services and device revenue. Mobile Service Peru Revenue: Includes mobile services and device revenue. Mobile Data Revenue: Includes mobile Internet and MBB revenue. Monthly Fee: A flat monthly fee charged to a customer for use of a system service. Monthly Service: Fee charged to the customer for overage consumption in a month. MOU: Minutes of Use per subscriber; the ratio of traffic in a given period to the average number of subscribers during the same period; presented on a monthly basis. MPLS: Multiprotocol Label Switching; a switching technology created to provide virtual circuits in IP networks. Multimedia Revenue: Includes voice, mobile data and MBB revenue. MVNO: Mobile virtual network operator is a wireless communications services provider that does not own the wireless network infrastructure over which it provides services to its customers. Net Financial Debt: Total short- and long-term debt, less cash & cash equivalents and less current and non - current financial assets. Net Debt / EBITDA: The ratio between Net Financial Debt to trailing 12-month period income before interest, taxes, depreciation and amortization. NGN: Next Generation Network; the convergence of publicly switched telephone networks (PSTN), voice networks, the internet and data networks. Other Revenue – Non-core: revenue which are not a part of the Company’s core business; concepts included are gain / (loss) on sale of fixed assets and interest accrued on past due invoices and leasing operations. PUE: Power Usage Effectiveness is a metric defined by The Green Grid to measure the energy efficiency of data centers.
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27 3Q & Nine Months 2026 Results – Empresa Nacional de Telecomunicaciones S.A November 2nd, 2026 RAN Sharing (Radio Access Network sharing): Technology strategy that provides for the sharing of antennas between different operators RGU: Revenue Generating Units; number of services subscribed per customer, commonly used for residential services. SAC: Subscriber Acquisition Cost; the sum of handset subsidies, marketing expenses and commissions to distributors for handset activation. Handset subsidies are calculated as the difference between device cost and device revenue. SG&A: Selling, General and Administrative Expenses. Simplified free cash flow: The result of (EBITDA – IFRS 16 leases – CAPEX – License payments – Net Financial Expenses (excluding IFRS 16)). SME: Small & Medium-Sized Enterprises. SMS: Short Message Service. TAB Rate: Chile Daily average interest rate that considers all financing operations for up to 1 year. VAS: Value Added Services, includes non -core services, all services beyond standard voice and data transmissions. Services included are; chat, concourses, general information, GPRS, IVR, ringtones, games, video content and others. VAS Revenue: Mobile revenue including VAS services, SMS and MSM. WIMAX: Worldwide Interoperability for Microwave Access, a standard-based wireless technology, which provides network access. 3.5G: Commercial name for HSDPA, the third-generation service provided by Entel. 4G: Fourth generation of mobile telecommunications technology, succeeding 3G and preceding 5G. 5G: Fifth-generation wireless is the latest iteration of cellular technology, engineered to increase the speed and responsiveness of wireless networks, enabling an increase in the amount of data transmitted over wireless systems due to more available bandwidth and advanced antenna technology.