Warsaw, August 21, 2026

Communiqué

GPW Benchmark announces that following the trading session on August 31, 2026, there will be a periodic change of corporate bond indices portfolio. In the indices there will be following changes:

WIPID

• new instruments: ABE0730, ALR0630, ATL0628, DVL0229, EBP0927, MBK01PERP-K, PHN0529, PKO0328, PLY1227, VHI1128,
• removed instruments: DOM0928, EBP1228, KRU0731, MBH0929, MBH1129, MBK1028, NDI0929, PKO0827, RPW1029.

WIPID-Catalyst

• new instruments: ALR0630, ORL1232, PHN0529, PLY0230, RES0529, ZAB0530,
• removed instruments: ECH0829, PEU1130, PKO0827, PKO1034-K, PLY1227, RON0928.

  Attached is the composition of the portfolios of the remaining corporate bond indices after changes.