Festi hf.: Publication of Supplement to Base Prospectus

Group 1 - Festi hf. has published a supplement to its base prospectus dated 9 October 2025, related to its bond and bill issuance program [1] - The supplement, dated 24 November 2025, has been approved by the Financial Supervisory Authority of the Central Bank of Iceland [1] - The supplement is available in Icelandic and can be accessed electronically on Festi's website alongside the base prospectus [1] Group 2 - Íslandsbanki hf. managed the approval process for the supplement with the Financial Supervisory Authority [2] - For further inquiries, contact Magnús Kr. Ingason, CFO of Festi hf. [2]