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 May 2025 Commission File Number: 001-15092 TURKCELL ILETISIM HIZMETLERI A.S. (Translation of registrant's name into English) Aydınevler Mahallesi İnönü Caddesi No:20 Küçükyalı Ofispark 34854 Maltepe Istanbul, Türkiye (Address of Principal Executive Offices) Indicate by check mark whether the registrant f ...

OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Table of Contents As filed with the Securities and Exchange Commission on April 29, 2025 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 ...

Core Insights - The article emphasizes the importance of value investing, highlighting the strategy of identifying undervalued companies in the market [2] - It introduces the Zacks Rank system and Style Scores to assist investors in finding strong stock picks based on earnings estimates and specific traits [1][3] Company Analysis: Turkcell Iletisim Hizmetleri (TKC) - TKC has a Zacks Rank of 2 (Buy) and a Value grade of A, indicating strong potential for value investors [4] - The stock's P/E ratio is 9.05, which is lower than the industry average of 9.27, suggesting it may be undervalued [4] - TKC's Forward P/E has fluctuated between 3.69 and 20.81 over the past year, with a median of 12.89 [4] - The P/S ratio for TKC is 1.28, compared to the industry's average P/S of 1.34, further indicating its value proposition [5] - The P/CF ratio for TKC is 2.98, significantly lower than the industry's average P/CF of 4.14, suggesting strong cash flow relative to its valuation [6] Company Analysis: Vodafone Group (VOD) - Vodafone Group also holds a Zacks Rank of 2 (Buy) and a Value grade of A, making it another attractive option for value investors [6] - The stock is currently trading at a forward earnings multiple of 9.37, which is in line with the industry average P/E of 9.27 [7] - Vodafone's PEG ratio is 0.57, compared to the industry's average PEG ratio of 0.65, indicating potential for growth relative to its earnings [7]

BARCELONA, Spain, March 7, 2025 /PRNewswire/ -- During MWC2025, Huawei and Turkcell (NYSE: TKC) (BIST: TCELL), Türkiye's technology leader signed Memorandum of Understanding to develop sustainable leading networks using innovative products and solutions in Turkcell Enhanced Network.The collaboration between the companies includes further developing smart cities using next-generation features of 5G Advanced Technology in wireless network as well as innovations in ultra-speed broadband services in access netw ...

ISTANBUL, March 3, 2025 /PRNewswire/ -- Odine (BIST: ODINE), a global technology partner, has worked with Mavenir to empower Turkcell (NYSE: TKC) (BIST: TCELL) through the advanced cloud-based automation of its telecom infrastructure, utilizing Odine Orion, a comprehensive wholesale voice management platform engineered by Turkish engineers. By leveraging Odine's expertise in network automation and orchestration, this initiative enhances Turkcell's operational efficiency, modernizing provisioning and call ro ...

Financial Data and Key Metrics Changes - For the full year 2024, the company's top line reached TRY 166 billion, reflecting a year-on-year increase of 7.8% [5][30] - EBITDA for 2024 was TRY 70 billion, a 10.2% increase from the previous year, with an EBITDA margin of approximately 42% [5][33] - Net income increased by 30%, exceeding TRY 23.5 billion [7] Business Line Data and Key Metrics Changes - The mobile segment saw a record-breaking 1.9 million net postpaid additions, the highest in 15 years, while the prepaid segment experienced a net loss of 0.9 million subscribers [6][8] - Fixed broadband market maintained rational pricing, with 32,000 net additions in Q4, bringing the total for the year to 168,000 [11] - Digital business services generated TRY 4.4 billion in revenue in Q4, with recurring service revenues rising 19% year-on-year [13] Market Data and Key Metrics Changes - The share of packages of 100 megabits per second and above in the residential fiber portfolio rose by 12 percentage points year-on-year [12] - The churn rate in the mobile segment increased to 2.8%, attributed to aggressive competitor campaigns and the disconnection of inactive subscribers [9][122] Company Strategy and Development Direction - The company is committed to advancing its infrastructure and technology, focusing on 5G and expanding its fiber network [24][28] - Plans to build two new data center modules in 2025, increasing capacity by 8.4 megawatts [16] - The Techfin segment, including Paycell and Financell, is expected to contribute significantly to top-line growth, with Paycell achieving 33% growth in Q4 [18][31] Management's Comments on Operating Environment and Future Outlook - Management expects top-line revenue growth of 7% to 9% for 2025, with a focus on maintaining profitability despite inflationary pressures [29][75] - The company is prepared for potential challenges from increased competition and inflation, emphasizing a diversified revenue model [105][107] - Management highlighted the importance of maintaining a strong cash position and effective balance sheet management [38][97] Other Important Information - The company issued a $1 billion euro bond, with half designated as a sustainable bond, reflecting its commitment to ESG initiatives [20][40] - The cash position at the end of 2024 was TRY 70 billion, with a net debt position of TRY 10 billion [38] Q&A Session Summary Question: What is the timeline for 5G deployment and potential license fees? - Management indicated that there is no official timeline yet, but a tender is expected in 2025, with a live network in 2026 [52][54] Question: What are the growth prospects for the company? - Management expects continued growth, with a focus on mobile and fixed services, and anticipates a similar growth rate in 2025 compared to 2024 [71][75] Question: How will the company manage EBITDA margins amidst inflation? - The company plans to maintain margins through effective cost management and a diversified revenue model [102][105] Question: What is the expected inflation rate for 2025? - The company estimates an average inflation rate of around 33% for 2025 [96][125] Question: What are the plans for dividend distribution? - The company maintains a policy of distributing 50% of net income, with the AGM expected to decide on the exact amount [126] Question: How will the company handle salary hikes in 2025? - Management indicated that salary increases are typically annual, with adjustments made based on inflation and competitive pressures [130][141]

Q4 & FY 2024 | February 27, 2025 BUSINESS OVERVIEW Ali Taha Koç, PhD | Turkcell CEO Turkcell Group: 2024 Highlights We Delivered What We Promised VCC REVENUE EBITDA Margin NET INCOME 166.7 69.8 41.9% 23.5 TRY bn 2024 ▲29.8% YoY ▲7.8% ▲10.2% ▲0.9pp ₺ MOBIL ARPU** TRY 276.8 ▲10.4% 578 K TOTAL NET ADD* 1.9 Mn Highest yearly postpaid net add in the last 15 years *Including mobile, fixed broadband, IPTV and wholesale (MVNO&FVNO) subscribers **Mobile ARPU (Excluding M2M), ARPU is IAS 29 Adjusted All financial fig ...

Company Performance - Turkcell has effectively managed through a challenging macroeconomic environment with cumulative three-year inflation exceeding 340% [1] - The company has leveraged its strong mobile service quality to maintain performance [1] Industry Context - The macroeconomic situation in Turkey has been exceptionally challenging, with significant inflationary pressures [1] Analyst Perspective - The analyst holds a beneficial long position in Turkcell shares through stock ownership, options, or other derivatives [1] - The article reflects the analyst's personal opinions and is not influenced by compensation or business relationships [1]

Financial Data and Key Metrics Changes - The company's top line increased by 7%, reaching TRY 40.2 billion, driven by strong ARPU growth and solid subscriber additions [5][21] - EBITDA rose by 10% to TRY 17.8 billion, resulting in a robust EBITDA margin of 44.2% [5][22] - Net income reported was TRY 14.3 billion, which includes TRY 3 billion profit from operations and proceeds from the sale of Ukraine assets [5][21] Business Line Data and Key Metrics Changes - Mobile segment faced aggressive pricing, leading to a 25% price adjustment in July, resulting in 515,000 new postpaid subscribers added in Q3 [6][7] - The prepaid customer base declined by 266,000 due to alternative data solutions impacting tourist demand [8] - Fixed broadband market saw 47,000 net additions in fiber subscribers, with residential fiber ARPU growing by 15% year-on-year [9][10] Market Data and Key Metrics Changes - The mobile number portability (MNP) activity increased by 47% quarter-over-quarter due to competitive campaigns [6] - The share of high-speed packages (100 megabits and above) in the residential fiber portfolio increased by 10 percentage points year-on-year [11] Company Strategy and Development Direction - The company is focused on digital services and solutions, with standalone paid users reaching five million and revenue from these services growing by 4% year-on-year [12][13] - Techfin segment revenues grew by 20%, driven by increased commissions and transaction volumes [15][17] - The company aims to cover 65% of its total electricity consumption from its own green energy production by 2026 [32] Management Comments on Operating Environment and Future Outlook - Management acknowledged the hyperinflationary environment and indicated that price adjustments have been made to adapt to market conditions [57] - The company expects real revenue growth in 2025, focusing on R&D and maintaining a strong postpaid and fiber customer base [48][49] Other Important Information - Following the divestment of Ukraine assets, the company's cash position increased to TRY 82 billion, with a net debt position of TRY 9 billion [25] - The company plans to issue a new Eurobond up to TRY 1 billion, with a portion expected to be sustainable [25][37] Q&A Session Summary Question: Details on divestment proceeds and 2025 CapEx outlook - Management stated that the final sales value from the Ukraine asset sale will be determined based on closing adjustments and may lead to significant investments [29][30] Question: Timing and structure of potential bond issuance - The company plans to issue around TRY 1 billion in Eurobonds, likely split between conventional and sustainable bonds, expected in Q1 2025 [36][37] Question: Growth prospects for data centers and cloud services - Management emphasized the increasing demand for data centers and cloud services, with plans for significant organic growth in capacity [41][59] Question: Impact of US elections on global strategy - Management indicated that they are monitoring the situation but do not foresee immediate impacts on their business [44] Question: Future M&A strategy - Currently, the company does not have any M&A plans but remains open to opportunities that could enhance growth [62]

Loan Agreement - Turkcell signed a long-term loan agreement with China Development Bank for the first tranche of a total RMB2.46 billion credit package, amounting to RMB1.23 billion (approximately EUR157 million) [3] - The repayment schedule includes 15 installments, with the first installment due 36 months after initial credit utilization at a repayment ratio of 1.25% [4] - The repayment ratios increase progressively, with the final installment due 120 months after initial credit utilization at a repayment ratio of 12.5% [4]