Strong Results;
Strengthening Strategic Position

ISTANBUL: Turkcell Iletisim Hizmetleri A.S. (NYSE:TKC) (BIST:TCELL):

• Please note that all financial data is consolidated and comprises that of Turkcell İletişim Hizmetleri A.S. (the “Company” or “Turkcell”) and its subsidiaries and associates (together referred to as the “Group”) unless otherwise stated.
• Our revenue segmentation was revised as of Q1 2025. Within this scope, all past data have been restated for comparability purposes. For a comprehensive explanation, please refer to the Press Release and the Excel file for Q1 2025, available on the Turkcell IR website.
• We have three reporting segments:
  • "Turkcell Türkiye," which comprises our telecom, digital services, and digital business services related businesses, retail channel operations, smart devices management, and consumer electronics sales through digital channels in Türkiye. All non-financial data presented in this press release is unconsolidated and comprises Turkcell Türkiye only unless otherwise stated. The terms "we," "us," and "our" in this press release refer only to Turkcell Türkiye, except in discussions of financial data, where such terms refer to the Group, and except where context otherwise requires.
  • “Techfin” which comprises all of our financial services businesses.
  • “Other” which primarily comprises our international, energy businesses, non-group call center, and intersegment eliminations.

• This press release provides a year-on-year comparison of our key indicators. Figures in parentheses following the operational and financial results for December 31, 2025, refer to the same item as of December 31, 2024. For further details, please refer to our consolidated financial statements and notes as of and for December 31, 2025, accessible via our website in the investor relations section (www.turkcell.com.tr).
• Selected financial information presented in this press release for the full year of 2024 and 2025 is based on IFRS figures in TRY terms unless otherwise stated.
• In the tables used in this press release, totals may not foot due to rounding differences. The same applies to the calculations in the text.
• Year-on-year percentage comparisons in this press release reflect mathematical calculations.

NOTICE

This press release contains the Company’s financial information for the period ended December 31, 2025, prepared in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”). This press release contains the Company’s financial information prepared in accordance with International Accounting Standard 29, Financial Reporting in Hyperinflationary Economies (“IAS29”). Therefore, the financial statement information included in this press release for the periods presented is expressed in terms of the purchasing power of the Turkish Lira as of December 31, 2025. The Company restated all non-monetary items in order to reflect the impact of the inflation restatement reporting in terms of the measuring unit current as of December 31, 2025. Comparative financial information has also been restated using the general price index of the current period.

This release includes forward-looking statements within the meaning of Section 27A of the U.S. Securities Act of 1933, Section 21E of the U.S. Securities Exchange Act of 1934, and the Safe Harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995. This includes, in particular, and without limitation, our targets for consolidated revenue growth, data center and cloud revenue growth, EBITDA margin, and operational capex over sales ratio for the full year 2026. In establishing such guidance and outlooks, the Company has used a certain number of assumptions regarding factors beyond its control, particularly in relation to macroeconomic indicators, such as expected inflation levels, that may not be realized or achieved. More generally, all statements other than statements of historical facts included in this press release, including, without limitation, certain statements regarding our operations, financial position, and business strategy, may constitute forward-looking statements. Forward-looking statements can generally be identified by the use of forward-looking terminology such as, among others, “will,” “expect,” “intend,” “estimate,” “believe,” “continue,” and “guidance.”

Forward-looking statements are not guarantees of future performance and involve certain risks and uncertainties that are difficult to predict. In addition, certain forward-looking statements are based upon assumptions as to future events that may not prove to be accurate. Many factors could cause the actual results, performance, or achievements of the Company to be materially different from any future results, performance, or achievements that may be expressed or implied by forward-looking statements. Should one or more of these risks or uncertainties materialize or underlying assumptions prove incorrect, actual results may vary materially from those described herein as anticipated, believed, estimated, expected, intended, planned, or projected.

These forward-looking statements are based upon a number of assumptions and other important factors that could cause our actual results, performance, or achievements to differ materially from our future results, performance, or achievements expressed or implied by such forward-looking statements. All subsequent written and oral forward-looking statements attributable to us are expressly qualified in their entirety by reference to these cautionary statements. For a discussion of certain factors that may affect the outcome of such forward- looking statements, see our Annual Report on Form 20-F for 2024 filed with the U.S. Securities and Exchange Commission, and in particular, the risk factor section therein. These forward-looking statements should not be relied upon as representing the Company’s views as of any date subsequent to the date of this press release. All forward-looking statements in this press release are based on information currently available to the Company, and we undertake no duty to update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise.

The Company makes no representation as to the accuracy or completeness of the information contained in this press release, which remains subject to verification, completion, and change. No responsibility or liability is or will be accepted by the Company or any of its subsidiaries, board members, officers, employees, or agents as to or in relation to the accuracy or completeness of the information contained in this press release or any other written or oral information made available to any interested party or its advisers.

FINANCIAL HIGHLIGHTS

FULL-YEAR HIGHLIGHTS

• As announced on May 7, 2025, BOTAŞ agreement successfully extended for the next 15 years through a tender process for an annual consideration of USD 25.5 million, strengthening Turkcell’s position in the fixed market.
• As announced on May 15, 2025, we launched a new three-year share buyback program consistent with our commitment to create shareholder value. The total number of shares bought back since 2016 reached 23.6 million.
• In line with the General Assembly decision, a total gross dividend of TRY 8.0 billion was paid in two equal installments on June 20, 2025, and December 26, 2025.
• In the 5G tender held in October 16, 2025, Turkcell secured the largest spectrum of 160 MHz for USD 1.2 billion (excluding VAT), further reinforcing its leadership in mobile market. Turkcell now holds approximately 42% of the available spectrum in Türkiye. The tender also extended the validity of our 2G, 3G and 4.5G authorizations until December 31, 2042, with a 5% an annual payment of gross mobile service revenues (excluding VAT) to the ICTA each year starting from April 30, 2029.
• As announced on November 12, 2025, Turkcell further advanced its long-standing data center and cloud investments through a strategic partnership with Google Cloud that will bring Türkiye’s first hyperscale cloud region to our country. The new region will consist of three or more zones. The first modules are expected to become operational in 2028–2029, with full completion phased in line with demand. Turkcell intends to deliver high-standard colocation services, ensuring earthquake resilience, advanced data security, uninterrupted energy supply, and world-class infrastructure. As a Google Cloud Premier Partner, Turkcell also expects to leverage its strong digital business services network to offer more than 200 Google Cloud services, further strengthening our value proposition. With a total planned investment of USD 1 billion by Turkcell and USD 2 billion by Google Cloud, this partnership represents a historic step in supporting Türkiye’s ambition to become a regional technology hub bridging Asia and Europe.
• Financial results above guidance and strong operational performance

• Group revenues rose by 10.7% supported by a diversified revenue base. Turkcell Türkiye, accounting for over 91% of Group revenues, was the main contributor. This was driven by strong ARPU growth through segmented pricing and upselling, alongside one of the highest postpaid net additions in our history. Techfin grew 21.1%, outpacing the Group, mainly driven by Paycell. Data Center & Cloud surpassed its guidance posting a notable 45% year-on-year growth.
• EBITDA1 rose by 13.8%, leading to an EBITDA margin of 43.1%; EBIT2 was up by 37.7%, resulting in an EBIT margin of 16.6%.

(1) EBITDA is a non-GAAP financial measure. See page 16 for the explanation of how we calculate Adjusted EBITDA and its reconciliation to net income.
(2) EBIT is a non-GAAP financial measure and equals EBITDA minus depreciation and amortization expenses.

• Profit from continuing operations increased by 22.6% to TRY 17.8 billion, supported by solid operational performance, despite increased tax expense due to the removal of inflationary accounting from 2025 full year statutory financials. The decline in net income was driven by the high base of 2024, which included the one-off gain from the sale of our Ukraine operations.

• Net leverage3 level at 0.14x; Net short FX position of US$957 million, deliberately expanded in light of prevailing hedging costs. Medium-term net FX target range –US$1.5bn to +US$1.5bn

• Double digit ARPU growth in both mobile and fixed segments, along with notable increase in postpaid subscriber base

• Highest mobile postpaid net additions of 2.4 million in last 26 years; bringing the postpaid share to 81%
• 119 thousand Turkcell Fiber and 190 thousand total fiber net additions, including resell operations
• Robust ARPU expansion despite competition constraints; mobile blended ARPU4 growth of 10.6% and residential fiber ARPU growth of 15.4% in 2025; mobile blended ARPU4 growth of 5.4%, residential fiber ARPU growth of 10.3% in Q425
• 405 thousand new fiber homepasses in 2025, bringing the total homepass to 6.3 million

• 2026 guidance5; revenue growth target of between 5%-7%, data center and cloud revenue growth target of between 18%-20%, EBITDA margin target of between 40%-42%, and operational capex over sales ratio6 target of around 25%.

(3) Our net debt calculation includes financial assets at fair value, whether through other comprehensive income or through profit and loss, reported under current and non-current assets, as well as financial assets at amortized cost. Required reserves held in CBRT balances are not included in total cash and net debt calculation, and this change has been reflected in previous quarters’ figures
(4) Excluding M2M
(5) Our expectations for 2026 incorporate the effects of inflation accounting under IAS 29. These projections are based on assumptions regarding factors beyond our control, including key macroeconomic indicators such as inflation. Our 2026 expectations are based specifically on an assumed annual inflation rate of around 23% (year-end). This paragraph contains forward-looking statements that reflect our current estimates and expectations regarding market conditions across all of our businesses. However, there can be no assurance that these forward-looking statements will occur as anticipated. For a discussion of the various factors that could impact the outcome of these forward-looking statements, please refer to our 2024 annual report on Form 20-F filed with the SEC, specifically the risk factors section.
(6) Excluding license fees

COMMENTS BY CEO, ALİ TAHA KOÇ, PhD

We closed 2025 with strong results, reinforcing our role in shaping Türkiye’s digital future.

2025 unfolded amid elevated geopolitical risks and periodic volatility driven by trade and monetary policy dynamics. Despite recession concerns, global growth proved more resilient than anticipated, while inflation gradually moderated. Artificial Intelligence became the defining investment theme across capital markets. In Türkiye, the economy continued its rebalancing process under policies prioritizing disinflation and financial stability. For our sector, clarity on 5G, frequency license extensions, and the 15-year BOTAŞ fiber tender covering the infrastructure currently utilized by Turkcell Superonline has-established the framework underpinning Türkiye’s digital transformation, while enhancing visibility for long-term investment planning. Leading Türkiye’s digital transformation, Turkcell strengthened its leadership in the mobile market by securing the highest capacity of 160 MHz in the 5G tender. We have safeguarded the long-term sustainability of our fiber infrastructure through the BOTAŞ tender.

Turkcell has built a leadership position in the data center and cloud market over many years through disciplined and visionary investments. Driven by our confidence in Türkiye’s digital future, we took a strategic step in 2025 that elevated this vision to the next level. Leveraging the strength of our digital infrastructure and operational expertise, we signed a long-term partnership with Google Cloud to establish Türkiye’s first hyperscale cloud region. We believe this strategic move will support Türkiye’s ambition to become a regional technology hub and create a scalable platform for future hyperscale investments.

In a period of elevated investment needs, we executed our strategic priorities with discipline, supported by a strong balance sheet and robust cash generation. We maintained a clear focus on sustainable value creation for shareholders. With our disciplined and consistent approach, we continued to differentiate ourselves in the sector and distributed a total gross dividend of TRY 8.0 billion in 2025.

We closed 2025 with solid operational and financial results. In a year marked by intense competition, when Mobile Number Portability (MNP) volumes approached 18 million and reached a historic peak, we achieved the highest net postpaid subscriber additions of the past 26 years, totaling 2.4 million. At the same time, we stayed committed to sustainable revenue growth and delivered double-digit ARPU growth across both mobile and fixed segments.

Supported by strong core performance and contributions from high-growth businesses such as Paycell and Digital Business Services, we closed 2025 above our guidance. Consolidated revenues increased by 10.7% year-on-year to TRY 241 billion. EBITDA¹ margin improved by 1.2 points to 43.1%, supported by disciplined cost management amid inflationary pressures. Profit from continuing operations increased by 22.6% to TRY 17.8 billion for 2025, despite the adverse impact stemming from the deferral of inflation accounting implementation in statutory financials.

Strong subscriber net addition aligned with our profitable growth strategy

In an environment where competition reached unprecedented level, we maintained our focus on balanced subscriber growth and ARPU expansion. As the most preferred mobile operator, we stayed firmly customer-centric and differentiated through innovative services. Reflecting this approach, we outperformed the previous year, delivering total net mobile subscriber additions of 809 thousand and increasing our total mobile subscriber base to 39.1 million in 2025. Consistent with our sustainable revenue growth strategy, we delivered 2.4 million net postpaid subscriber additions, the highest level since 1999. As a result, our postpaid subscriber base reached 31.5 million, while the postpaid subscriber ratio increased by 5 percentage points year-on-year to 81%. Thanks to our dynamic and agile marketing approach, we effectively navigated challenging market conditions. Through micro-segmentation-based pricing actions and AI-supported offer architecture, we migrated customers to higher-tier packages and increased mobile ARPU (excluding M2M) by 10.6% year-on-year.

On the other hand, as the operator that introduced Türkiye to FWA technology, we are preparing to deliver fiber-speed internet to users even in areas without fiber infrastructure through our new-generation 5G-compatible Superbox modem. With 5G launching on April 1st, Turkcell 5G’s capacity and speed advantages will be enjoyed across both mobile and fixed broadband services.

Within fixed broadband, we continued to broaden the reach of our end-to-end fiber access network. We added 405 thousand homepasses increasing total fiber homepass to 6.3 million. Our take-up rate reached 42.4% through an efficiency-driven approach focused on high-demand areas. Base-station fiberization, which is critical for 5G launch in April, increased by 6 percentage points year-on-year to exceed 47%. Despite declines in cable and DSL subscribers, we expanded our fixed base with net additions of 119 thousand Turkcell fiber subscribers, in line with our profitability focus. Demand for high-speed connectivity continued to rise, with the share of residential fiber subscribers on 100 Mbps and above increasing to 57%. Supported by price adjustments, migration to higher-speed packages, a higher share of 12-month contracts, and IPTV contribution, residential fiber ARPU increased by 15.4% year-on-year. We will continue investing in fixed infrastructure to bring the end-to-end Turkcell fiber experience to more households.

We continued to differentiate through a diversified revenue mix, clear strategic priorities, and a robust balance sheet

Beyond our leading position in the telecom sector, we offer our customers an integrated digital ecosystem through innovative solutions in areas such as Techfin and digital business services, while strengthening our financial resilience and growth potential through our diversified revenue structure.

In 2025, Techfin segment delivered strong performance, with revenues growing by 21.1%, outpacing Group growth. Up 41.0% year-on-year, Paycell was the main driver with revenues, led by POS and Pay Later solutions. The non-group revenues of Paycell increased 18-percentage-point year-on-year, highlighting a scalable and sustainable business model beyond the Turkcell ecosystem. Offering diversified financing solutions to its customers, Financell, recorded limited real revenue growth due to tight regulatory conditions, but maintained healthy and disciplined growth in its loan portfolio.

We accelerated investment pace in data centers and cloud-one of our core strategic focus areas-throughout 2025. Across our four next-generation data centers, serving over 4,000 companies, active capacity increased by 8.4 MW year-on-year to 50 MW. Supported by strong demand and high service quality, data center and cloud revenues grew by 45.0% in real terms, well above the guidance shared at the beginning of the year.

In 2025, we also made strong progress in renewable energy, another key focus area. We commissioned our Karaman solar power plant (SPP) in the last quarter, our largest active facility to date. With SPPs commissioned in Karaman, Van, Balıkesir, and Yozgat, active solar capacity increased from 8.2 MW at the beginning of the year to 62.3 MW by year-end 2025. With a strong sense of responsibility toward the environment, our country, and future generations, we aim to expand our renewable energy capacity in 2026, while maintaining focus on energy efficiency. We view each investment in this area as a lasting step for Türkiye’s sustainable future.

Guided by our strategic priorities, we underpin today’s key steps with a robust balance sheet and disciplined financial management. In line with our proactive approach, we strengthened our balance sheet to support high-value strategic investments in 5G, data centers, and solar energy. At the beginning of 2025, we successfully executed Turkcell’s largest ever Eurobond issuance with USD 1 billion dual-tranche, Half of which was issued as a sustainable bond in line with our sustainability strategy. We further reinforced our balance sheet with murabaha financings secured from Gulf countries during the year. Through these transactions, we extended and optimized the maturity profile of our debt portfolio into a more balanced composition, enhancing our financial flexibility and further strengthening our liquidity position.

2026 Expectations

We closed 2025 with solid and healthy results, sustaining our trajectory of consistent growth. In 2026, we will maintain an ambitious investment pace aligned with long-term value creation. While preserving leadership in our core business, we will intensify investments in data center and cloud, 5G, fiber infrastructure, and renewable energy. We will continue supporting Türkiye’s digital transformation through disciplined management and strong execution.

Accordingly, we expect3 revenue growth of 5%–7% in 2026. We expect our data center and cloud business to grow by 18%–20%, supporting this performance, and we target an EBITDA margin in the range of 40%–42%. Although we remain in an intense investment phase, we anticipate capital expenditures4 as a percentage of revenues to stand at 25%, underpinned by solid revenue generation.

On this journey to position Türkiye at the highest level in communications and technology, I would like to thank our Board of Directors for their vision and guidance, our customers for their trust and all my colleagues for their dedication and commitment.

(1) EBITDA is a non-GAAP financial measure. See page 16 for details on how Adjusted EBITDA is calculated and reconciled with net income
(2) Based on internal calculations regarding corporate sales made through data centers.
(3) Our expectations for 2026 incorporate the effects of inflation accounting under IAS 29. These projections are based on assumptions regarding factors beyond our control, including key macroeconomic indicators such as inflation. Our 2026 expectations are based specifically on an assumed annual inflation rate of around 23% (year-end). This paragraph contains forward-looking statements that reflect our current estimates and expectations regarding market conditions across all of our businesses. However, there can be no assurance that these forward-looking statements will occur as anticipated.

Fonte: Business Wire