TÜRKİYE İŞ BANKASI A.Ş.

Capital/Financing Update • Jan 9, 2026

Summary Info	Capital Markets Board Approval Regarding The Issuance of Subordinated Notes
Update Notification Flag	No
Correction Notification Flag	Yes
Postponed Notification Flag	No
Reason of Correction	The date of application to CMB has been corrected

Authorized Member Decision Date	03.11.2025
Issue Limit	25.000.000.000
Currency Unit	TRY
Issue Limit Security Type	Subordinated Debt Securities
Sale Type	Sale To Qualified Investor
Domestic / Oversea	Domestic
Capital Market Board Application Date	17.12.2025
Capital Market Board Application Result	APPROVAL
Capital Market Board Approval Date	08.01.2026
Expiry Date of Issue Limit	08.01.2027

Additional Explanations

Reference: Public disclosures of Türkiye İş Bankası A.Ş. (İşbank) on 03.11.2025 and 17.12.2025. With the related public disclosures, it was announced that İşbank made the necessary application to Capital Markets Board of Türkiye (CMBT) regarding to issuance of TL borrowing instruments up to TL 25 billion domestically, that meet the criteria for the inclusion in Additional Tier-1 capital and Tier-2 capital in accordance with the relevant legislation, in batches, with various terms, yields and amounts. Our application has been aprroved by Capital Markets Board of Türkiye and the approval is published in the CMBT's weekly bulletin dated 08.01.2026, numbered 2026/1. The Issue Document and Application Form approved by the CMBT will be published after those documents reaches our Bank. This is the translation of the Turkish public disclosure made by Türkiye İş Bankası A.Ş. through the Public Disclosure Platform, under the Material Events Guideline prepared in accordance with the Communique of Material Events, numbered II-15.1. According to the Material Events Guideline and the regulations, the Turkish public disclosure shall prevail. This is the translation of the Turkish public disclosure made by Türkiye İş Bankası A.Ş. through the Public Disclosure Platform, under the Material Events Guideline prepared in accordance with the Communique of Material Events, numbered II-15.1. According to the Material Events Guideline and the regulations, the Turkish public disclosure shall prevail.