Turkcell issues TRY 500M 93-day domestic bond

Turkcell İletişim Hizmetleri A.Ş. completed a domestic private bond placement to qualified investors in Türkiye with a nominal amount of TRY 500,000,000.

Rhea-AI Filing Summary

Turkcell İletişim Hizmetleri A.Ş. completed a domestic private bond placement to qualified investors in Türkiye with a nominal amount of TRY 500,000,000. The bond has a maturity date of September 25, 2026, a term of 93 days, and an annual simple interest rate of 40.25%, with a single coupon payment at maturity.

This issuance is carried out within a previously approved TRY 15,000,000,000 debt issuance limit and is not traded on a stock exchange. JCR Avrasya assigned the issuer a long-term national rating of AAA (tr), assessed as investment grade.

Insights

Credit and capital structure analyst

Turkcell raises short-term local funding via a rated TRY 500M bond.

Turkcell has issued a TRY 500,000,000 domestic bond to qualified investors under its broader TRY 15,000,000,000 issuance program. The instrument is short dated at 93 days, with a single repayment of principal and interest at maturity.

The bond carries a fixed annual simple interest rate of 40.25% (compound 46.6931%), reflecting local market conditions and inflation. It is not exchange-traded, which keeps the placement focused on institutional or qualified buyers rather than broad retail participation.

Issuer credit quality is supported by a long-term national rating of AAA (tr) from JCR Avrasya as of May 22, 2026, categorized as investment grade. Future filings may clarify how actively Turkcell continues using the remaining capacity under the TRY 15,000,000,000 limit.

Key Figures

Program issuance limit: TRY 15,000,000,000 Bond nominal amount: TRY 500,000,000 Maturity: 93 days (25.09.2026) +5 more

8 metrics

Program issuance limit TRY 15,000,000,000 Debt issuance limit approved by Capital Markets Board

Bond nominal amount TRY 500,000,000 Financing bond sold to qualified investors in Türkiye

Maturity 93 days (25.09.2026) Short-term bond with single repayment at maturity

Annual simple interest rate 40.25% Fixed yearly simple interest on the bond

Annual compound interest rate 46.6931% Fixed yearly compound interest metric

Periodic coupon rate 10.2555% Single coupon over the 93-day term

Issue price 1 Issue price per unit of nominal value

Issuer rating AAA (tr) investment grade JCR Avrasya long-term national rating as of 22.05.2026

Key Terms

qualified investors, private placement, Yearly Simple (%), Yearly Compound (%), +2 more

6 terms

qualified investors financial

"nominal amount of TRY 500,000,000 to qualified investors within Türkiye, without a public placement"

Qualified investors are individuals or institutions that meet regulatory standards—such as a minimum income, net worth, or professional expertise—allowing them access to investment opportunities not open to the general public. Think of them as a financial "VIP" group: they can buy private deals, complex products, or early-stage securities that may offer higher returns but also carry greater risk and less public information, so their status matters because it changes what investments are available and what protections apply.

private placement financial

"Sale Type | Private Placement-Sale to Qualified Investor"

A private placement is a sale of securities directly to a selected group of investors, typically institutions or accredited investors, instead of through a public offering. It lets a company raise money faster and with fewer regulatory steps; for existing shareholders it matters because the newly issued shares, often sold at a discount, increase the share count and can dilute their ownership.

Yearly Simple (%) financial

"Interest Rate Type | Fixed Interest Rate - Yearly Simple (%) | 40.2500"

Yearly Compound (%) financial

"Interest Rate - Yearly Compound (%) | 46.6931"

investment grade financial

"Long Term National Rating AAA (tr) | 22.05.2026 | Yes"

A credit rating label assigned to bonds or borrowers that signals relatively low risk of default; think of it as a strong health check for a company's or government's ability to repay debt. It matters to investors because investment-grade status typically means lower interest costs for the borrower, greater eligibility for conservative funds and pension portfolios, and generally more stable returns compared with higher-risk, non-investment-grade debt.

Regulation S regulatory

"persons (as defined in Regulation S under the Securities Act)"

Regulation S is a set of rules that allows companies to sell securities (like shares or bonds) to investors outside the United States without having to follow all U.S. securities laws. It matters because it makes it easier for companies to raise money from international investors while still complying with U.S. regulations.

FAQ

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

What type of bond did Turkcell (TKC) issue in June 2026?

Turkcell issued a domestic financing bond with a nominal amount of TRY 500,000,000 sold via private placement to qualified investors in Türkiye. It is a short-term, fixed-rate debt security with a single coupon payment at maturity.

What are the key terms of Turkcell’s (TKC) new TRY 500 million bond?

The bond has a 93-day maturity ending on September 25, 2026, carries a fixed annual simple interest rate of 40.25%, and is issued at a price of 1. Interest and principal are repaid together in one payment at maturity.

Within what limit was Turkcell’s (TKC) TRY 500 million bond issued?

The bond was issued under a broader TRY 15,000,000,000 issuance limit approved by the Capital Markets Board. This limit allows Turkcell to conduct multiple debt issuances, with this 93-day financing bond representing one portion of that capacity.

Who can buy Turkcell’s new financing bond and is it exchange traded?

The bond is offered to qualified investors within Türkiye via private placement and is not traded on a stock exchange. This structure targets institutional-type buyers rather than public retail investors, concentrating liquidity among professional market participants.

What interest and coupon structure does Turkcell’s (TKC) bond have?

The bond uses a fixed-rate structure with an annual simple interest of 40.25% and annual compound interest of 46.6931%. It has a single coupon with a periodic rate of 10.2555% over the 93-day term, paid together with principal at maturity.

What credit rating does Turkcell have for this issuance?

JCR Avrasya assigned Turkcell a Long Term National Rating AAA (tr) on May 22, 2026, classified as investment grade. This rating applies at the issuer level and supports market confidence in Turkcell’s ability to meet its bond obligations.

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

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Accepted by SEC EDGAR 06/24/2026 - 01:14 PM 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 June 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 June 24, 2026 announcing the registrant’s financing bond issuance.

Istanbul, June 24, 2026

Announcement Regarding the Financing Bond Issuance

Within the scope of the TRY 15,000,000,000 issuance limit approved by the Capital Markets Board, the book building of the financing bond issuance of our Company with a maturity date of September 25, 2026, an annual simple interest of 40.25% with a nominal amount of TRY 500,000,000 to qualified investors within Türkiye, without a public placement was completed, and the securities will be transferred to the investor accounts on June 24, 2026 (today).

Board Decision Date	: 06.11.2025
Related Issue Limit Info
Currency Unit	: TRY
Limit	: 15,000,000,000
Issue Limit Security Type	: Debt Securities
Sale Type	: Private Placement-Sale to Qualified Investor
Domestic / Oversea	: Domestic
Capital Market Board Approval Date	: 17.06.2026
Capital Market Instrument to be Issued Info
Type	: Bill
Maturity Date	: 25.09.2026
Maturity (Day)	: 93
Sale Type	: Sale To Qualified Investor
Intended Nominal Amount	: 500,000,000
Intended Maximum Nominal Amount	: -
The country where the issue takes place	: Türkiye
Title Of Intermediary Brokerage House	:
Central Securities Depository	: Merkezi Kayıt Kuruluşu A.Ş.
Starting Date of Sale	: 23.06.2026
Ending Date of Sale	: 24.06.2026
Nominal Value of Capital Market Instrument Sold	: 500,000,000
Maturity Starting Date	: 24.06.2026
Issue Price	: 1
Interest Rate Type	: Fixed
Interest Rate - Yearly Simple (%)	: 40.2500
Interest Rate - Yearly Compound (%)	: 46.6931
Traded in the Stock Exchange	: No
Payment Type	: TL Payment
ISIN Code	: TRFTCEL92610
Coupon Number	: 1
Currency Unit	: TRY
Coupon Payment Frequency	: Single Coupon

1

Redemption Plan of Capital Market Instrument Sold

Coupon Number	Payment Date	Record Date*	Payment Date	Interest Rate - Periodic (%)	Payment Amount	Exchange Rate	Was The Payment Made?
1	25.09.2026	24.09.2026	25.09.2026	10.2555
Principal/Maturity Date Payment Amount	25.09.2026	24.09.2026	25.09.2026

* The date on which the beneficiaries are determined.

Issuer Rating Note

Rating Company	Rating Note	Rating Date	Is it Investment Grade?
JCR AVRASYA DERECELENDİRME A.Ş.	Long Term National Rating AAA (tr)	22.05.2026	Yes

For more information:

Turkcell Investor Relations

investor.relations@turkcell.com.tr

Tel: + 90 212 313 1888

Disclaimer

This press release does not constitute an offer to sell, or a solicitation of offers to purchase or subscribe for securities in the United States or any other jurisdiction in which such offer or solicitation would be unlawful. The securities referred to herein have not been and will not be registered under the U.S. Securities Act of 1933, as amended (the "Securities Act"), and may not be offered, sold or delivered within the United States or to or for the benefit of, US persons (as defined in Regulation S under the Securities Act) absent registration or an applicable exemption from the registration requirements of the Securities Act. This press release is being issued pursuant to and in accordance with Rule 135c under the Securities Act.

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: June 24, 2026	By:	/s/ Özlem Yardım
		Name:	Özlem Yardım
		Title:	Investor Relations Corporate Finance Director

	TURKCELL İLETİŞİM HİZMETLERİ A.Ş.
Date: June 24, 2026	By:	/s/ Kamil Kalyon
		Name:	Kamil Kalyon
		Title:	Chief Financial Officer