Institut IGH d.d.

Board/Management Information • Jun 4, 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, June 4, 2025.

SUBJECT: Notification on the change of the Representative of the Employees in the INSTITUT IGH, d.d. Supervisory Board

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:

IGH INSTITUTE, ISC Zagreb, Janka Rakuše 1, OIB: 79766124714 (hereinafter: the Company) informs the investment public that on June 4, 2025, it was notified of the election of a new employee representative in the Supervisory Board, Mr. Dalibor Sekulić. Dalibor Sekulić's mandate begins on June 15, 2025.

Sincerely,

INSTITUT IGH, JSC

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

PHONE +385 (0)1 612 51 25 FAX +385 (0)1 612 54 01 EMAIL igh@igh.hr WEB www.igh.hr

Competent court: Commercial Court in Zagreb Register entry with company registration No 080000959

EUR 14,814,630.00 Paid in full No of issued shares: : IGH 1,481,463

Nominal share value EUR 10

Share capital:

Reg.No.: 3750272 PIN: 79766124714

Business bank: Hrvatska poštanska banka d.d IBAN: HR3423900011198006586 SWIFT code: HPBZHR2X

Management Board: Robert Petrosian, President of the Management Board Marija Đuroković, Member of the Management Board

Supervisory Board: Žarko Dešković, MEng.CE President of the Supervisory Board