Turkcell files 6-K with 2025 Integrated Annual Report

Turkcell İletişim Hizmetleri A.Ş. submitted a Form 6-K as a foreign private issuer, mainly to furnish its Turkcell 2025 Integrated Annual Report to the U.S. Securities and Exchange Commission.

Accepted by SEC EDGAR 03/13/2026 - 10:00 AM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Turkcell İletişim Hizmetleri A.Ş. submitted a Form 6-K as a foreign private issuer, mainly to furnish its Turkcell 2025 Integrated Annual Report to the U.S. Securities and Exchange Commission. The attached report is a translation of the Turkish annual report.

The annual report was prepared under the Capital Markets Board of Türkiye rules, using Turkish Accounting Standards and Turkish Financial Reporting Standards, and audited under Turkish auditing standards. The filing is administrative in nature and does not itself present detailed financial results.

FAQ

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What did Turkcell (TKC) file in this Form 6-K?

Turkcell filed a Form 6-K to furnish its Turkcell 2025 Integrated Annual Report as Exhibit 99.1. The filing is primarily a cover submission, making the translated Turkish annual report available to the U.S. Securities and Exchange Commission.

Which accounting standards are used in Turkcell’s 2025 Integrated Annual Report?

The 2025 Integrated Annual Report was prepared under Turkish Accounting Standards and Turkish Financial Reporting Standards. These frameworks follow rules of the Capital Markets Board of Türkiye and are audited under Turkish Auditing Standards issued by the Public Oversight Authority in Türkiye.

Is Turkcell’s Form 6-K based on Form 20-F or Form 40-F reporting?

Turkcell indicates that it files annual reports under cover of Form 20-F, not Form 40-F. This confirms it follows the typical U.S. reporting framework for foreign private issuers rather than the Canadian-based Form 40-F regime.

What exhibit is attached to Turkcell’s March 2026 Form 6-K?

The Form 6-K attaches Exhibit 99.1, titled “Turkcell 2025 Integrated Annual Report.” This exhibit contains the translated Turkish annual report, including financial information and other disclosures prepared under Turkish capital markets and reporting standards.

Who signed Turkcell’s March 2026 Form 6-K submission?

The Form 6-K was signed on behalf of Turkcell by Investor Relations Corporate Finance Director Özlem Yardım and Chief Financial Officer Kamil Kalyon. Their signatures confirm that the company has duly authorized the furnishing of the 2025 Integrated Annual Report.

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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 March 2026

Commission File Number: 001-15092

TURKCELL İLETİŞİM HİZMETLERİ A.Ş.

(Translation of registrant’s name into English)

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

Turkcell İletişim Hizmetleri A.Ş. hereby furnishes to the Securities and Exchange Commission the information set forth in the following Exhibit Index. The attached annual report is the translation of an Annual Report that was prepared in accordance with the Capital Markets Board of Türkiye, and includes certain financial information prepared in accordance with Turkish Accounting Standards (“TAS”) / Turkish Financial Reporting Standards (“TFRS”) and audited in accordance with standards on auditing as issued by the Capital Markets Board of Türkiye and Independent Auditing Standards which are part of the Turkish Auditing Standards as issued by the Public Oversight Accounting and Auditing Standards Authority of Türkiye.

EXHIBIT INDEX

Exhibit		Title
Exhibit 99.1		Turkcell 2025 Integrated Annual Report

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: March 13, 2026	By:	/s/ Özlem Yardım
		Name:	Özlem Yardım
		Title:	Investor Relations Corporate Finance Director

	TURKCELL İLETİŞİM HİZMETLERİ A.Ş.
Date: March 13, 2026	By:	/s/ Kamil Kalyon
		Name:	Kamil Kalyon
		Title:	Chief Financial Officer

Filing Exhibits & Attachments

1 document

Press Releases

• EX-99.1 EXHIBIT 99.1 21.0 MB