Warsaw, April 28, 2026

Communiqué

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

TBSP.Index

• new bond: PS0731,
• change in the number of bonds: WS0428, OK0128, DS1035.

GPWB-B1Y3Y

• new bond: WS0429,
• change in the number of bonds: WS0428, OK0128.

GPWB-B1Y4Y

• change in the number of bonds: WS0428, OK0128.

GPWB-B1Y5Y

• change in the number of bonds: WS0428, OK0128.

GPWB-B3Y5Y

• removed bond: WS0429.

GPWB-B5Y

• new bond: PS0731,
• change in the number of bonds: DS1035.

GPWB-BWZ

• removed bond: WZ1126.

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