Turkiye Garanti Bankasi A.S.: Prospectus – Issuer Information Document

TO: Investment Community FROM : Garanti BBVA / Investor Relations SUBJECT: Prospectus – Issuer Information Document DATE: September 18, 2026   Regarding the resolution that has been adopted by Garanti Bank on Sep 03, 2026 the  application to issue “Garanti Bank Investment Institution Warrants”, up to the aggregate amount of 15,000,000,000  in the nominal value of  TRY 0,1  for each and 150,000,000 Turkish Lira (One hundred and fifty million Turkish Lira) was made to the Capital Markets Board.   Accordingly, the “Draft Issuer Information Document”, which has been submitted for the approval of the Capital Markets Board, regarding the issuance of Investment Institution Warrants up to the aggregate amount of TL 150,000,000 within 1-year period, is enclosed herewith.   *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