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 June 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 June 22, 2026 announcing the CMB approval of the registrant's debt instrument issuance.
Istanbul, June 22, 2026
Announcement Regarding the CMB Approval of Debt Instrument Issuance
With reference to our Company's announcement dated April 22, 2026, the Capital Markets Board approved our application to issue domestic debt instrument on June 17, 2026 with the decision number 37/1125.
| Authorized Member Decision Date | 06.11.2025 |
| Issue Limit and Currency Unit | 15,000,000,000 TRY |
| Issue Limit Security Type | Debt Securities |
| Sale Type | Private Placement – Sale to Qualified Investor |
| Domestic/Oversea | Domestic |
| Capital Market Board Application Date | 22.04.2026 |
| Capital Market Board Application Result | Approval |
| Capital Market Board Approval Date | 17.06.2026 |
| Expiry Date of Issue Limit | 17.06.2027 |
For more information:
Turkcell Investor Relations
investor.relations@turkcell.com.tr
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: June 22, 2026 | By: | /s/ Özlem Yardım | |
| Name: | Özlem Yardım | ||
| Title: | Investor Relations Corporate Finance Director | ||
| TURKCELL İLETİŞİM HİZMETLERİ A.Ş. | |||
| Date: June 22, 2026 | By: | /s/ Kamil Kalyon | |
| Name: | Kamil Kalyon | ||
| Title: | Chief Financial Officer | ||