Body of the report: 
With reference to Current Report No. 24/2026, the Management Board of Jastrzębska Spółka Węglowa S.A. [“JSW”, “Company”] hereby reports that that on 29 April 2026, it decided to publish additional parameters from the Technical and Economic Plan of JSW S.A. for 2026.

The Company’s Management Board reports that, in accordance with the provisions of JSW S.A.’s Technical and Economic Plan for 2026:

A] The unit mining cash cost of coal [unit MCC] for 2026 has been estimated at approx. PLN 577 per ton,
B] The level of JSW's capital expenditure for 2026 has been set at approx. PLN 2 billion,
C] The projected average selling price for coal in 2026 is PLN 647.81 per ton and in Q1 2027, PLN 635.25 per ton,
D] The total projected number of employee departures under the protective measures [in the form of miners’ leave, leave for employees of the coal preparation plant and one-time severance pays] has been set at 4,248. JSW expects that the impact of these measures on improving the Company’s liquidity will begin to be felt starting in May 2026.  As a result of the protective measures introduced, the estimated savings in payroll costs, including payroll taxes, in 2026 will amount to approximately PLN 460 million.

In addition, the Company’s Management Board hereby reports that the projected level of capital expenditures for the JSW Group in 2026 will amount to approx. PLN 2.4 billion.

Legal basis: Article 17(1) of Regulation [EU] No. 596/2014 of the European Parliament and of the Council of 16 April 2014 on Market Abuse and Repealing Directive 2003/6/EC of the European Parliament and of the Council and Commission Directives 2003/124/EC, 2003/125/EC and 2004/72/EC.