Warsaw, October 28, 2026

Communiqué

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

TBSP.INDEX

• removed bond: PS0527;
• change in the number of bonds: DS0436, DS1034, OK0129, PS1031;

GPWB-B1Y3Y

• new bond: DS1029;
• change in the number of bonds: OK0129;

GPWB-B1Y4Y

• new bond: DS1030;
• change in the number of bonds: OK0129;

GPWB-B1Y5Y

• new bond: PS1031;
• change in the number of bonds: OK0129;

GPWB-B3Y5Y

• new bond: PS1031;
• removed bond: DS1029;

GPWB-B3Y

• removed bond: DS1029;
• change in the number of bonds: DS0436, DS1034, PS1031;

GPWB-B5Y

• removed bond: PS1031;
• change in the number of bonds: DS0436, DS1034;

GPWB-BWZ

• change in the number of bonds: NZ0928.

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