Institut IGH d.d.

Board/Management Information • Oct 30, 2024

Ordinary share IGH-R-A, ISIN HRIGH0RA0006 Listed on the official market of the Zagreb Stock Exchange Share IGH-R-D, ISIN HRIGH0RD0003 Not 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, 30. october 2024.

The Supervisory Board of the company INSTITUT IGH, joint-stock company for research and development in civil engineering, with the address Janka Rakuše 1 in Zagreb, registered at the Commercial court in Zagreb, MBS: 080000959, OIB: 79766124714 (hereinafter: the Company), announces that on October 30th 2024., on its 5 th Supervisory Board session has considered and adopted the decision on the plan of corporate activities for the year 2025.

INSTITUT IGH, JSC

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

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

Mjerodavni sud: Trgovački sud u Zagrebu registarski uložak s matičnim brojem (MBS) 080000959

Temeljni kapital: 14.814.630,00 €, uplaćen u cijelosti

Broj izdanih dionica: IGH 1.481.463 Nominalna vrijednost dionice 10 €

MB: 3750272 OIB: 79766124714 Poslovna banka: Hrvatska poštanska banka d.d. IBAN: HR3423900011198006586 SWIFT kod: HPBZHR2X

Uprava:

Robert Petrosian, predsjednik Uprave Marija Đuroković, članica Uprave Tatjana Bičanić, članica Uprave Josip Majer, član Uprave

Nadzorni odbor: Žarko Dešković, dipl.ing.građ. , predsjednik Nadzornog Odbora

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

SUPERVISORY BOARD Number: 00-2024/005-3

Supervisory Board of the company INSTITUT IGH, d.d. at its 5 th session held on October 30th 2024., adopted the following

DECISION

The Plan of Corporate Activities for the year 2025 is adopted as follows:

• a. The schedule of the Supervisory Board sessions:
  • 7 th session 28.02.2025.
  • 8 th session 30.04.2025.
  • 9 th session 25.07.2025.
  • 10th session 30.10.2025.
  • 11th session 19.12.2025.

The regular General Assembly session will be held on 25.07.2025.

• b. Schedule for publication of the Company's financial statements
  • 1. Interim unaudited unconsolidated and consolidated financial reports for the fourth quarter of the business year 2024. – date of publication: Febuary 28th 2025.
  • 1. Audited unconsolidated and consolidated financial reports for the business year 2024. date of publication: April 30th 2025.
  • 1. Unaudited unconsolidated and consolidated financial reports for the first quarter of the business year 2025. – date of publication: April 30th 2025.
  • 1. Unaudited unconsolidated and consolidated financial reports for the first half of the business year 2025. – date of publication: July 25th 2025.
  • 1. Unaudited unconsolidated and consolidated financial reports for the third quarter of the business year 2024 – date of publication: October 30th 2025.".

Chairman of the Supervisory Board

Žarko Dešković

INSTITUT IGH, d.d.