Warsaw, August 3, 2026

Communiqué

GPW Benchmark announces that publication of the new GPWB-B3Y index (ISIN: PL9999996348) will commence on August 17, 2026. The index comprises a basket of fixed-rate government bonds and zero-coupon government bonds with maturities exceeding 36 months.

  Attached is the composition of the new index portfolio.