Institut IGH d.d.

Report Publication Announcement • Oct 28, 2025

Ordinary share IGH-R-A, ISIN HRIGH0RA0006 Listed on the official market of the Zagreb Stock Exchange Home Member State: Croatia LEI mark: 74780000W0UQ8MF2FU71

ZAGREB STOCK EXCHANGE HANFA HINA Ivana Lučića 2a Miramarska 24b ots@hina.hr 10000 Zagreb 10000 Zagreb

Zagreb, 28. october 2025

SUBJECT: Announcement of the Supervisory Board meeting

Respected,

In accordance with the provisions of Regulation (EU) No 596/2014 of the European Parliament and of the Council of April 16th 2014 on market abuse (Market Abuse Regulation), the Capital Market Act, and the Rules of the Zagreb Stock Exchange, we hereby inform you as follows:

INSTITUT IGH, d.d. Zagreb, Janka Rakuše 1, OIB: 79766124714 (hereinafter: the Company) announces that on 30. october 2025, the Supervisory Board meeting of INSTITUT IGH, d.d. will be held, at which the unrevised, consolidated and unconsolidated financial report for third quarter of year 2025 will be considered.

INSTITUT IGH, JSC

INSTITUT IGH, d.d. Janka Rakuše 1 10000 Zagreb, Croatia

PHONE: +385 (0)1 612 51 25 EMAIL: igh@igh.hr WEB: www.igh.hr

Business bank:

KentBank d.d. IBAN: HR48 4124 0031 1990 1793 2 SWIFT code: KENBHR22

Reg.No.: 3750272 PIN: 79766124714

Competent court:

Commercial Court in Zagreb Register entry with company registration No. 080000959

Share capital:

EUR 14,814,630.00, Paid in full

No. of issued shares: IGH 1,481,463 Nominal share value EUR 10

Management Board:

Mariyan Tkach, President of the Management Board Bariša Pavičić, Member of the Management Board Gerhard Sattler Vukadinović, Member of the Management Board