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 March 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 March 25, 2025, announcing the registrant's board of directors' resolution and call for Annual General Assembly.

Istanbul, March 25, 2025

Announcement Regarding the Board of Directors’ Resolution and Call for Annual General Assembly

Our Company’s Board of Directors has decided to call the Annual General Assembly Meeting of our Company pertaining to the year of 2024 to convene on May 15, 2025 at 10:30 at the address of “Aydınevler Mahallesi, İnönü Caddesi, No:20/36, C Blok, Conference Hall, Küçükyalı Ofispark, 34854, Maltepe/İstanbul” and to discuss the attached agenda.

For more information:

Turkcell Investor Relations

[email protected]

Tel: + 90 212 313 1888

THE CALL

TURKCELL İLETİŞİM HİZMETLERİ ANONİM ŞİRKETİ

THE CONVENTION OF THE ANNUAL GENERAL ASSEMBLY MEETING FOR THE FISCAL YEAR 2024 ON 15.05.2025

Istanbul Trade Registry Office- Trade Register Number: 304844-0

The Ordinary General Assembly Meeting for the Fiscal Year of 2024 of our Company shall be held on 15 May 2025, Thursday at 10:30 a.m. at Company Headquarters located Aydınevler Mahallesi, İnönü Caddesi, No: 20/36, C Blok, Konferans Salonu, Küçükyalı Ofispark, 34854, Maltepe/İstanbul in order to discuss and resolve the issues written on the agenda below.

The shareholders of our Company shall be entitled to attend the Ordinary General Assembly Meeting with their physical presence or in electronic environment in person or by proxy. Attending the meeting in electronic environment is possible through the secure e-signature of the shareholders or their representatives. Thus, it is necessary that the shareholders or their representatives, who will make actions on electronic general assembly system (“EGKS”), shall have secure e-signature and register in Central Securities Depository of the Turkish capital markets (“MKK”) “e-Investor: Investor Information Centre”.

Besides the shareholder or their proxies, who would like to attend the meeting in electronic environment, must fulfil the obligations in accordance with the provisions of the “Regulation on General Assembly Meetings of Joint Stock Companies to be held by Electronic Means” published on the Official Gazette numbered 28395 dated 28 August 2012 and “the Communiqué on Electronic General Meeting System Applicable at General Assemblies of Joint Stock Companies” published on Official Gazette numbered 28396 on 29 August 2012.

The shareholders who cannot attend the meeting in person in physical or electronic environment must issue a power of attorney either by notarizing the signature on it or by attaching the signature declaration issued before notary public to the signed power of attorney form in conformity with the sample below by fulfilling the obligations stated in “The Communique on Voting By Proxy and Proxy Solicitation” of Capital Markets Board numbered II-30.1. The power of attorney sample is available in Company Headquarter and Company’s website www.turkcell.com.tr. The shareholders, who would like to attend the General Assembly in person in physical environment, shall exercise their rights relating to their shares registered in the “The Shareholders List” on MKK by submitting the identity card. The power of attorneys which are not in conformity with attached power of attorney sample and obliged by the aforementioned Communique, shall not be accepted.

The shareholders, who will attend the general assembly in electronic environment over EGKS, can receive information on the website of MKK https://www.mkk.com.tr about the rules and principles for the attendance, appointment of the representative, proposing, expressing view and voting.

Our Company’s Consolidated Financial Statements regarding the fiscal year 2024, Integrated Activity Report of the Board of Directors, Independent Auditor’s Report and Dividend Distribution Proposal of the Board of Directors, Articles of Association Amendment Text and General Assembly Information Document shall be ready for our shareholders’ review, at least three weeks before the date of the General Assembly Meeting at Company’s Headquarter and website www.turkcell.com.tr and on the EGKS of MKK.

In accordance with the Capital Markets Law, any notice shall not be sent by registered mail to the Shareholders for the registered and publicly registered shares.

Respectfully submitted to the attention of the Shareholders.

TURKCELL İLETİŞİM HİZMETLERİ A.Ş.

AGENDA OF THE ORDINARY GENERAL ASSEMBLY MEETING FOR FINANCIAL YEAR 2024

TURKCELL İLETİŞİM HİZMETLERİ ANONİM ŞİRKETİ

Presidency of the Board of Directors

POWER OF ATTORNEY

TO THE CHAIRMANSHIP OF THE BOARD OF DIRECTORS OF TURKCELL İLETİŞİM HİZMETLERİ A.Ş.,

I hereby appoint _____________________________________, who is presented below in details, as my proxy; to represent me, to vote, to make proposals and to sign the necessary documents on behalf of me in the Ordinary General Assembly Meeting of Turkcell İletişim Hizmetleri Anonim Şirketi for the Fiscal Year of 2024 to be held on 15 May 2025, Thursday, at 10:30 a.m., at Company Headquarters located at the address of Aydınevler Mahallesi, İnönü Caddesi, No: 20/36, C Blok, Konferans Salonu, Küçükyalı Ofispark, 34854, Maltepe/İstanbul, in line with my below instructions.

Proxy(*);

Name Surname/Commercial Title:

TC Identity No/Tax ID No, Trade Registry Office and Registry Number and Central Registration (MERSİS) Number:

(*) For foreign proxies equivalent information must be submitted.

A)                SCOPE OF POWER OF ATTORNEY

The scope of power of attorney shall be determined by choosing either (a), (b) or (c) for sections 1 and 2 below.

1. In relation with the Issues under the General Assembly Agenda;

a) The proxy shall be authorized to vote in line with his/her opinion.

b) The proxy shall be authorized to vote in line with the proposals of the company management.

c) The proxy shall be authorized to vote in line with the instructions indicated in the below table.

Instructions:

If option (c) is chosen by the shareholder, instructions shall be submitted specifically to agenda items by checking one of the options (acceptance or refusal) provided next to the relevant agenda item of general assembly, and if refusal option is chosen, by indicating the opposition note, if any, which is required to be written in the general assembly minutes.

(*) The issues under the general assembly agenda shall be listed one by one. If minority has a separate resolution draft, it shall be specifically stated to enable voting by proxy.

2. Specific Instruction related with other issues that may arise during the General Assembly meeting and especially with the use of minority rights:

a) The proxy shall be authorized to vote in line with his/her opinion.

b) The proxy shall not be authorized to represent in these matters.

c) The proxy shall be authorized to vote in line with the below specific instructions.

SPECIFIC INSTRUCTIONS; Specific instructions of the shareholder to the proxy shall be indicated here, if any.

B)                The shareholder shall specify the shares to be represented by the proxy, by choosing one of the options below.

1. I hereby approve my below detailed shares to be represented by proxy.

a) Order and serial:*

b) Number/Group:**

c) Amount-Nominal value:

d) Voting privileges:

e) Bearer-Registered:*

f) Ratio of total shares/voting rights of the shareholder:

* This information is not requested for shares that are electronically registered.

**Group information shall be submitted instead of number for electronically registered shares.

2. I hereby approve that all of my shares listed in the list of shareholders to attend the general assembly meeting, which is prepared by the MKK one day prior to the general assembly, shall be represented by a proxy.

NAME SURNAME or TITLE OF THE SHAREHOLDER (*)

TC Identity No/Tax ID No, Trade Registry Office and Registry Number and Central Registration (MERSİS) Number:

Address:

SIGNATURE

(*) For foreign shareholders equivalent information must be submitted.

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.