Turkcell, unit to buy TRY 16.5B property, excluding VAT

The reported transaction value was 5.87% of Turkcell's six-month weighted-average company value and 6.8% of latest annual sales.

Rhea-AI Filing Summary

Turkcell İletişim Hizmetleri A.Ş. resolved to purchase Building B at İstanbul Financial Center for TRY 6,983,204,159 excluding VAT, while its subsidiary Turkcell Teknoloji Araştırma ve Geliştirme A.Ş. (TTECH) resolved to purchase Building A for TRY 9,528,495,841 excluding VAT. The reported total purchase value is TRY 16,511,700,000 excluding VAT for 171 independent units. The purchase conditions are cash, and the transaction is listed with a completion date of October 22, 2026. The properties are intended for a technology and management center.

The counterparty, TVF İFM Gayrimenkul İnşaat ve Yönetim A.Ş., is identified as a subsidiary of Türkiye Wealth Fund, Turkcell’s controlling shareholder. The transaction was reported as negotiated at a 4% discount to the valuation report. Turkcell’s board resolved on September 24, 2026, to postpone public disclosure because disclosure before completion of title deed transfer procedures could adversely affect the acquisition process and the company’s legal rights and interests.

Positive

• Minor point. Forward-looking: it has not happened yet and may not happen.The properties are intended for a technology and management center and comprise 171 independent units.

Negative

• None.

Filing Explained

The filing reports the TRY 16,511,700,000 purchase value, excluding VAT, as 2.5% of latest total assets, 8.5% of net non-current assets, 6.8% of latest annual sales, 5.87% of company value based on the six months before the board decision, and 751% of paid-in capital.

Key Figures

Total purchase value: TRY 16,511,700,000 excluding VAT Building B purchase price: TRY 6,983,204,159 excluding VAT Building A purchase price: TRY 9,528,495,841 excluding VAT +5 more

8 metrics

Total purchase value TRY 16,511,700,000 excluding VAT Reported total for the Building A and Building B purchases

Building B purchase price TRY 6,983,204,159 excluding VAT Turkcell’s purchase

Building A purchase price TRY 9,528,495,841 excluding VAT TTECH’s purchase

Independent units 171 units Located in Buildings A and B

Transaction amount to company value 5.87% Based on the mathematical weighted average on a daily basis during the six months before the board decision

Purchase value to latest annual sales 6.8% Ratio using the latest annual financial statements

Purchase value to total assets 2.5% Ratio using the latest disclosed financial statements

Negotiated discount 4% Discount reported in relation to the valuation report

Key Terms

independent units, paid-in capital, Market Approach, Material Events

4 terms

independent units technical

"A total of 171 independent units located in Buildings A and B"

paid-in capital financial

"Ratio of Purchase Price to Paid-in Capital of Company"

Paid-in capital is the cash and other assets shareholders have given a company in exchange for its stock, including amounts paid above the stock’s nominal value. Investors care because it shows how much funding came directly from owners rather than from borrowing or profits, affecting the company’s financial cushion, ownership dilution and how resilient it may be in tough times — like the extra money people pay above a ticket price to support a project they believe in.

Market Approach financial

"Value Determination Method of Non-Current Asset"

Material Events regulatory

"Communiqué on Material Events"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What was the purchase price for the TKC İstanbul Financial Center properties?

The reported total purchase value is TRY 16,511,700,000 excluding VAT. Turkcell’s purchase of Building B was TRY 6,983,204,159 excluding VAT, and its subsidiary TTECH’s purchase of Building A was TRY 9,528,495,841 excluding VAT.

What values were assigned to the TKC properties?

Denge Gayrimenkul Değerleme ve Danışmanlık A.Ş.’s valuation report dated August 3, 2026, valued Building A at TRY 9,879,000,000 excluding VAT and Building B at TRY 7,238,100,000 excluding VAT. The acquisition was reported as negotiated at a 4% discount.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/22/2026 - 03:32 PM EDT Accepted by SEC EDGAR 10/22/2026 - 03:31 PM EDT Learn about SEC filing dates

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 October 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 October 22, 2026 announcing real estate acquisitions.

İstanbul, October 22, 2026

Announcement Regarding the Acquisition of Real Estate

Our Company's Board of Directors has resolved to purchase the property located in İstanbul Financial Center, Building B, on Plot 2, Block 3328, Finanskent Neighborhood, Ümraniye District, İstanbul, owned by TVF İFM Gayrimenkul İnşaat ve Yönetim A.Ş., for a total consideration of TRY 6,983,204,159, excluding VAT, and for our subsidiary Turkcell Teknoloji Araştırma ve Geliştirme A.Ş. (TTECH) to purchase the property located in Building A at the same location for a total consideration of TRY 9,528,495,841, excluding VAT.

Considering that public disclosure of the acquisition prior to the completion of the title deed transfer procedures could adversely affect the acquisition process and harm our Company’s legal rights and interests, it was resolved by the Board of Directors on September 24, 2026, to postpone the public disclosure of the information in question pursuant to Article 6 of the Capital Markets Board's Communiqué on Material Events.

For more information:

Turkcell Investor Relations

investor.relations@turkcell.com.tr

Tel: + 90 212 313 1888

1

Non-Current Asset Purchase

Address	:	Aydınevler Mah. İsmet İnönü Cad. No:20 Küçükyalı Ofispark, Maltepe, İstanbul
Telephone and Fax Number	:	Tel:  (212) 313 1000 Fax: (216) 504 4058
E-mail Address	:	investor.relations@turkcell.com.tr; musteri.hizmetleri@turkcell.com.tr
Telephone and Fax Number of the Company's Investor Relations Unit	:	Tel:  (212) 313 1888 Fax: (216) 504 4058
Update Notification Flag	:	No
Correction Notification Flag	:	No
Postponed Notification Flag	:	Yes
Nature of Non Current Asset Bought	:	Building
Location and Area of Non-current Asset Bought	:	A total of 171 independent units located in Buildings A and B on Plot 2, Block 3328, in Finanskent Neighborhood, Ümraniye District, İstanbul Province
Board Decision Date for Purchase	:	24.09.2026
Were Majority of Independent Board Members' Approved the Board Decision for Purchase	:	Yes
Total Purchasing Value	:	TRY 16,511,700,000 (excluding VAT)
Ratio of Transaction Amount to Value of Company Based on the Mathematical Weighted Average on a Daily Basis, Six Months Prior to Date of Board Decision (%)	:	5.87%
Ratio of Purchase Price to Paid-in Capital of Company (%)	:	751%
Ratio of Purchasing Value to Total Assets in Latest Disclosed Financial Statements of Company (%)	:	2.5%
Ratio of Purchasing Value to Total Net Non-current Assets in Latest Disclosed Financial Statements of  Company (%)	:	8.5%
Ratio of Transaction Value to Sales in Latest Annual Financial Statements of Company (%)	:	6.8%
Purchasing Conditions	:	Cash
Date on which the Transaction was/will be Completed	:	22.10.2026
Aim of Purchase and Effects on Company Operations	:	Technology and Management Center / Positive
Counter Party	:	TVF İFM Gayrimenkul İnşaat ve Yönetim A.Ş.
Is Counter Party a Related Party According to CMB Regulations?	:	Yes
Nature of Relation with Counter Party	:	A subsidiary of Türkiye Wealth Fund, the controlling shareholder of our Company
Agreement Signing Date if Exists	:	9.10.2026
Exercise Price of Retirement Right Relating to Significant Transaction	:	-
Value Determination Method of Non-Current Asset	:	Market Approach
Did Valuation Report be Prepared?	:	Prepared
Reason for not Preparing Valuation Report if it was not Prepared	:	-
Date and Number of Valuation Report	:	03.08.2026 / TRKCL-202600002
Title of Valuation Company Prepared Report	:	Denge Gayrimenkul Değerleme ve Danışmanlık A.Ş.
Value Determined in Valuation Report if Exists	:	Building A: TRY 9,879,000,000 (excluding VAT) / Building B: TRY 7,238,100,000 (excluding VAT)
Reasons if Transaction wasn't/will not be performed in Accordance with Valuation Report	:	Acquired through negotiation at a 4% discount

2

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: October 22, 2026	By:	/s/ Özlem Yardım
		Name:	Özlem Yardım
		Title:	Investor Relations Corporate Finance Director

	TURKCELL İLETİŞİM HİZMETLERİ A.Ş.
Date: October 22, 2026	By:	/s/ Kamil Kalyon
		Name:	Kamil Kalyon
		Title:	Chief Financial Officer