SEC Form 6-K filed by Turkcell Iletisim Hizmetleri AS
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 December 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 December 31, 2025 announcing the completion of the merger through acquisition of the registrant with its subsidiary Artel Bilişim Servisleri A.Ş..

Istanbul, December 31, 2025
Announcement Regarding the Completion of the Merger Through Acquisition with Our Subsidiary Artel Bilişim Servisleri A.Ş.
The transactions of the "Merger via Facilitated Procedure" with our wholly owned subsidiary Artel Bilişim Servisleri A.Ş. (“Artel”) have been completed, and the transaction has been registered to the Trade Registry.
| 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 |
| Registry Date of the Merger | 31.12.2025 |
For more information:
Turkcell Investor Relations
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: December 31, 2025 | By: | /s/ Özlem Yardım | |
| Name: | Özlem Yardım | ||
| Title: | Investor Relations Corporate Finance Director | ||
| TURKCELL İLETİŞİM HİZMETLERİ A.Ş. | |||
| Date: December 31, 2025 | By: | /s/ Kamil Kalyon | |
| Name: | Kamil Kalyon | ||
| Title: | Chief Financial Officer | ||