Warsaw, May 27, 2026

Communiqué

GPW Benchmark announces that following the trading session on May 29, 2026, there will be a periodic change of bond indices portfolio. In the indices there will be following changes:

TBSP.Index

• new bond: DS0436,
• change in the number of bonds: PS0731, OK0128, PS0130, DS1034.

GPWB-B1Y3Y

• removed bond: PS0527,
• change in the number of bonds: OK0128.

GPWB-B1Y4Y

• removed bond: PS0527,
• change in the number of bonds: OK0128, PS0130.

GPWB-B1Y5Y

• removed bond: PS0527,
• change in the number of bonds: OK0128, PS0130.

GPWB-B3Y5Y

• change in the number of bonds: PS0130.

GPWB-B5Y

• new bond: DS0436,
• change in the number of bonds: PS0731, DS1034.

GPWB-BWZ

• new bonds: NZ0928, NZ0331.

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