Communiqué

GPW Benchmark announces that following the trading session on June 20, 2025 there will be an extraordinary adjustment of GPWB-CENTR.

As a result of this extraordinary adjustment the number of shares of ALLEGRO company (ISIN LU2237380790) will amount to 715,320,000.

The extraordinary adjustment results from the increase in the number of free float shares  of ALLEGRO company over EUR 250 million.