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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 November 2025
Commission File Number: 001-15092
TURKCELL İLETİŞİM HİZMETLERİ A.Ş.
(Translation of registrant’s name into English)
Turkcell Küçükyalı Plaza
Aydınevler Mahallesi İnönü Caddesi No:20
Küçükyalı 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 November 27, 2025 announcing the approval by the CMB of the registrant's merger through acquisition with its subsidiary, Artel Bilişim Servisleri A.Ş.
Istanbul, November 27, 2025
Announcement Regarding the Merger Through Acquisition with Our Subsidiary Artel
Bilişim Servisleri A.Ş. / CMB Approval
The application made to the Capital Markets Board (“CMB”) on September 16, 2025 for the "Merger via Facilitated Procedure" with our wholly owned subsidiary Artel Bilişim Servisleri A.Ş. (“Artel”) was approved* with the decision published in the bulletin dated November 25, 2025 and numbered 2025/60.
*The announcement text and merger agreement are available in Turkish on our website.
| Board Decision Date | : 22.08.2025 |
| Merger Model | : Merger Through Acquisition |
| Date Of Financial Statements Base To Merger | : 30.06.2025 |
| Currency Unit | : TRY |
| Acquired Company | Trading on the Stock Exchange/Not Trading On The Stock Exchange |
| Artel Bilişim Servisleri A.Ş. | Not Trading on The Stock Exchange |
| Share Group Info |
Paid In Capital | Amount Of Capital to Be Increased Due to The Acquisition (TRY) |
Capital To Be Decreased (TRY) |
Target Capital | New Shares to Be Given Due To Merger |
| Group A, Not Trading, TRETCEL00012 | 330,000,000 | 330,000,000 | |||
| Group B, TCELL, TRATCELL91M1 | 1,870,000,000 | 1,870,000,000 | |||
| TOTAL | TRY 2,200,000,000 | TRY 0 | TRY 0 | TRY 2,200,000,000 |
| Paid In Capital | Amount Of Capital To Be Increased Due To The Acquisition |
Capital To Be Decreased |
Target Capital | |
| TOTAL | TRY 2,200,000,000 | TRY 0 | TRY 0 | TRY 2,200,000,000 |
| CMB Application Date Regarding the Merger | 16.09.2025 |
| CMB Application Result Regarding the Merger | Approval |
| CMB Approval Date Regarding the Merger | 25.11.2025 |
For more information:
Turkcell Investor Relations
investor.relations@turkcell.com.tr
Tel: + 90 212 313 1888
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: November 28, 2025 | By: | /s/ Özlem Yardım | |
| Name: | Özlem Yardım | ||
| Title: | Investor Relations Corporate Finance Director | ||
| TURKCELL İLETİŞİM HİZMETLERİ A.Ş. | |||
| Date: November 28, 2025 | By: | /s/ Kamil Kalyon | |
| Name: | Kamil Kalyon | ||
| Title: | Chief Financial Officer | ||