6-K - TURKCELL ILETISIM HIZMETLERI A S (0001071321) (Filer)
SEC · EDGAR 财务披露 · October 28, 2026 at 10:27 AM ET
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 October 2026
Commission File Number: 001-15092
TURKCELL İLETİŞİM HİZMETLERİ A.Ş.
(Translation of registrant’s name into English)
Turkcell Küçükyalı Plaza
Aydınevler Mahallesi, İsmet İnönü Caddesi, No:20
Küçükyalı B Blok Ofispark
34854 Maltepe
Istanbul, Türkiye
(Address of Principal Executive Offices)
Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:
x Form 20-F ¨ Form 40-F
Enclosure: A press release dated October 28, 2026 announcing the registrant's share buy-back transactions.

Istanbul, October 28, 2026
Announcement Regarding the Share Buy-back Transactions
Within the scope of our Company’s buy-back program, with the aim of protecting the interests of our stakeholders and supporting healthy price formation in the market while maintaining the fair value of our shares, on October 28, 2026, a total of 20,110 shares were purchased at an average price level of TRY 91.10. The total transaction value is TRY 1,832,021.
The details of the buy-back transactions
| Code of Share Subject to Buy-back |
Transaction Date | Nominal Value of Shares Subject to Transaction (TRY) |
Ratio to Capital (%) |
Transaction Price (TRY / Unit) |
Nominal Value Of Shares Previously Buy-Backed Within The Frame Of The Program (TRY) |
Privileges. If Any, Associated with These Shares |
| Group B, TCELL, TRATCELL91M1 | 12.11.2025 | 2,093,944 | 0.095 | 95.58 | - | - |
| Group B, TCELL, TRATCELL91M1 | 23.10.2026 | 3,201,696 | 0.146 | 86.75 | 2,093,944 | - |
| Group B, TCELL, TRATCELL91M1 | 27.10.2026 | 1,196,377 | 0.054 | 90.50 | 5,295,640 | - |
| Group B, TCELL, TRATCELL91M1 | 28.10.2026 | 20,110 | 0.0009 | 91.10 | 6,492,017 | - |
For more information:
Turkcell Investor Relations
investor.relations@turkcell
Tel: + 90 212 313 1888
1
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, Turkcell İletişim Hizmetleri A.Ş. has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
| TURKCELL İLETİŞİM HİZMETLERİ A.Ş. | |||
| Date: October 28, 2026 | By: | /s/ Özlem Yardım | |
| Name: | Özlem Yardım | ||
| Title: | Investor Relations Corporate Finance Director | ||
| TURKCELL İLETİŞİM HİZMETLERİ A.Ş. | |||
| Date: October 28, 2026 | By: | /s/ Kamil Kalyon | |
| Name: | Kamil Kalyon | ||
| Title: | Chief Financial Officer | ||