Warsaw, September 1, 2026

Communiqué

With reference to the announcement on 21 August 2026 concerning the periodic change of corporate bond index (POLCBF) portfolio, GPW Benchmark S.A. informs that, following the trading session on 31 August 2026, the portfolio was supplemented with an additional bond*: BD20121B2817.

  Attached is the full composition of the POLCBF index portfolio after changes – 31 August 2026.