Warsaw, July 7, 2026

Communiqué

GPW Benchmark informs that after the trading session on July 9, 2026, there will be an extraordinary adjustment of the sWIG80, sWIG80TR and WIG140 indices portfolios.

REX (ISIN PLRXCNC00017) with 32,516,000 shares will be entered on the lists of sWIG80, sWIG80TR and WIG140 indices participants, in place of AILLERON (ISIN PLWNDMB00010).

The extraordinary adjustment of the indices results from the admission of REX shares to the Main Market, for which the value of free-float shares on the first quotation date is at least 1.25% of the capitalization of sWIG80 index portfolio, respectively, at the session on that day.

Moreover, the lists of WIG and WIG-Poland indices will be supplemented with 32,516,000 shares of REX company (ISIN PLRXCNC00017).

REX company’s shares were introduced to trading on June 29, 2026 and fulfill criteria of the above mentioned indices.