Warsaw, September 18, 2026

Communiqué

GPW Benchmark announces that following the trading session on September 30, 2026, there will be a periodic change of corporate bond indices portfolio. In the indices there will be following changes:

WIPID

• new instruments: ALR0428, DOM0928, EBP1228, ECH0128, IBH0630, MBH0330, MBH0929,
• removed instruments: ARH0628, DEK0230, DOM0530, EBP0927, ENA0530, PEOH128, PEOH729, PEU1130, VHI1128.

WIPID-Catalyst

• new instruments: ACH0729, BST1131, ENA0530, MBH0629,
• removed instruments: ACH0628, BST0330, EBP0927, ORL1232.

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