Communiqué

GPW Benchmark announces that during the trading session on 6 July 2026, due to technical issues, the Administrator identified irregularities in the calculation of the preliminary values and closing values of the following bond indices: TBSP.Index, GPWB-B1Y3Y, GPWB-B1Y4Y, GPWB-B1Y5Y, GPWB-B3Y5Y, GPWB-B5Y, and GPWB-BWZ.

Following the identification of the erroneous values, the Administrator verified the calculations and issued the relevant operational notices concerning both the preliminary and the closing values. At the same time, the Administrator informs and confirms that the closing values for the session of 6 July 2026, as published on the Administrator’s website, are correct.