Turkcell (NYSE: TKC) renews D&O insurance with limit above 25% of capital

Rhea-AI Filing Summary

Turkcell Iletisim Hizmetleri A.S. filed a report explaining that it has renewed its Directors & Officers (D&O) liability insurance. This policy covers members of the Board of Directors, senior executives, and senior executives of group companies and is now valid until October 1, 2026.

The company states that the total liability limit of this insurance coverage exceeds 25% of the Company’s capital, meeting the requirements of the Capital Markets Board's Corporate Governance Communiqué. This renewal helps ensure that key decision-makers have insurance protection in place while managing the business.

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 ILETISIM HIZMETLERI A.S.

(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

Enclosure: A press release dated November 28, 2025, announcing the renewal of the registrant's Directors & Officers Liability Insurance.

 

Istanbul, November 28, 2025

Announcement Regarding the Renewal of Directors & Officers Liability Insurance

Pursuant to Article 4.2.8 of the annex of the Capital Markets Board's Corporate Governance Communiqué; the existing "Directors & Officers Liability Insurance" for the members of our Company's Board of Directors, senior executives and senior executives of group companies has been renewed to be valid until October 1, 2026. The total liability limit of the insurance exceeds 25% of the Company's capital.

For more information:

Turkcell Investor Relations

investor.relations@turkcell.com.tr

Tel: + 90 212 313 1888

2

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, Turkcell Iletisim Hizmetleri A.S. has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	TURKCELL ILETISIM HIZMETLERI A.S.
Date: November 28, 2025	By:	/s/ Özlem Yardım
		Name:	Özlem Yardım
		Title:	Investor Relations Corporate Finance Director

	TURKCELL ILETISIM HIZMETLERI A.S.
Date: November 28, 2025	By:	/s/ Kamil Kalyon
		Name:	Kamil Kalyon
		Title:	Chief Financial Officer

FAQ

What did Turkcell (TKC) announce in its November 2025 Form 6-K?

Turkcell announced the renewal of its Directors & Officers liability insurance for its board members and senior executives, with coverage valid until October 1, 2026.

Who is covered by Turkcell’s renewed Directors & Officers liability insurance?

The renewed policy covers members of the Board of Directors, senior executives, and senior executives of group companies.

How large is the liability limit of Turkcell’s renewed D&O insurance?

Turkcell states that the total liability limit of the renewed D&O insurance exceeds 25% of the Company’s capital.

For what period is Turkcell’s Directors & Officers insurance valid?

The renewed D&O insurance is valid until October 1, 2026.

Why does Turkcell disclose its D&O insurance renewal?

The disclosure is made pursuant to Article 4.2.8 of the annex of the Capital Markets Board's Corporate Governance Communiqué, which requires such information to be announced.

How can investors get more information about Turkcell’s D&O insurance renewal?

Investors can contact Turkcell Investor Relations via email at investor.relations@turkcell.com.tr or by phone at +90 212 313 1888.