Who signed Turkcell’s February 2026 6-K related to 2025 results?

The 6-K was signed on behalf of Turkcell by Özlem Yardım, Investor Relations Corporate Finance Director, and Kamil Kalyon, Chief Financial Officer. Both signatures are dated February 4, 2026, confirming the company’s announcement of its 2025 financial results calendar.

Turkcell sets March 5 date for 2025 results

Turkcell İletişim Hizmetleri A.Ş. has set the date for releasing its full-year 2025 financial results.

Accepted by SEC EDGAR 02/04/2026 - 11:19 AM EST

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Form Type

6-K

Rhea-AI Filing Summary

Turkcell İletişim Hizmetleri A.Ş. has set the date for releasing its full-year 2025 financial results. The company plans to publicly announce results for the period from January 1, 2025 to December 31, 2025 on March 5, 2026 after Borsa Istanbul trading hours.

FAQ

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When will Turkcell (TKC) announce its full-year 2025 financial results?

Turkcell plans to announce its full-year 2025 financial results on March 5, 2026 after Borsa Istanbul trading hours. The results will cover the period from January 1, 2025 to December 31, 2025, according to the company’s published financial calendar.

Which period will Turkcell (TKC) 2025 financial results cover?

Turkcell’s 2025 financial results will cover the period from January 1, 2025 to December 31, 2025. The company has indicated these full-year figures are scheduled to be released to the public on March 5, 2026 after Borsa Istanbul trading hours.

What did Turkcell (TKC) disclose in its February 2026 6-K filing?

Turkcell’s February 2026 6-K filing discloses the planned calendar for its 4th Quarter and full-year 2025 financial results. It states that results for January 1, 2025 to December 31, 2025 are planned for public release on March 5, 2026 after Borsa Istanbul trading hours.

At what time of day will Turkcell (TKC) release 2025 results?

Turkcell plans to release its full-year 2025 financial results after Borsa Istanbul trading hours on March 5, 2026. This timing means detailed figures will become available once that day’s regular trading session on Borsa Istanbul has closed, as indicated in the announcement.

How can investors contact Turkcell (TKC) Investor Relations?

Investors can contact Turkcell Investor Relations by email at investor.relations@turkcell.com.tr or by phone at +90 212 313 1888. These contact details are provided for more information about the company’s financial results calendar and related investor inquiries.

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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 February 2026

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 ore willannuafil reports under cover of Form 20-F or Form 40-F:

x 20-F ¨ Form 40-F

Enclosure: A press release dated February 4, 2026 announcing the registrant's 4th Quarter 2025 Financial Results Calendar.

Istanbul, February 4, 2026

Announcement Regarding 4^th Quarter 2025 Financial Results Calendar

Our Company's financial results for the period January 1, 2025 – December 31, 2025 are planned to be publicly announced on March 5, 2026 after Borsa Istanbul trading hours.

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: February 4, 2026	By:	/s/ Özlem Yardım
		Name: Özlem Yardım
		Title: Investor Relations Corporate Finance Director

	TURKCELL İLETİŞİM HİZMETLERİ A.Ş.

Date: February 4, 2026	By:	/s/ Kamil Kalyon
		Name: Kamil Kalyon
		Title: Chief Financial Officer

Source: View Original Filing on SEC EDGAR