Warsaw, December 5, 2025

Communiqué

GPW Benchmark informs that in the announcement dated October 31, 2025, concerning, among other things, the level of the Monthly Turnover Index (MTR) for the WIG20 and WIG30 indices applicable for the periodic adjustment in December 2025 was published incorrectly. The correct value is 0.0909. The change in the MTR value does not affect the classification of companies in the WIG20 and WIG30 indices after the periodic adjustment in December 2025.