Turkiye Garanti Bankasi A.S.: Redemption of the debt instrument at abroad within the Medium Term Note (MTN) program (XS3146739993)

TO: Investment Community

FROM : Garanti BBVA / Investor Relations

SUBJECT:Redemption of the debt instrument at abroad within the Medium Term Note (MTN) program

DATE: August 13, 2026

Ref: Our public disclosure dated 08.08.2025.

The debt instrument issued pursuant to MTN program by our Bank at abroad on 08.08.2025 in the amount of 200.000.000 USD was redeemed. In contradiction between the Turkish and English versions of this public disclosure, the Turkish version shall prevail.

*In contradiction between the Turkish and English versions of this public disclosure, the Turkish version shall prevail.

We declare that our above statements are in conformity with the principles included in the Board’s Communiqué, Serial II Nr.15.1, that it exactly reflects the information we received; that the information complies with our records, books and documents; that we did our best to obtain the correct and complete information relative to this subject and that we are responsible for the declarations made in this regard.

Yours sincerely,

Garanti BBVA

Contact Garanti BBVA Investor Relations:

Tel: +90 212 318 2352

Fax: +90 212 216 5902

E-mail: investorrelations@garantibbva.com.tr

www.garantibbvainvestorrelations.com