CEZ A.S.

Interest Rate Update/Notice • Oct 3, 2025

Prague, 3 October 2025

ČEZ, a. s. (Identification number 45274649) Information Obligation within the meaning of §120c Act No 256/2004 Coll., on Capital Market Undertakings, as amended

ČEZ, a. s. – Interest Payment Notice

ČEZ, a. s. announces that on 6 October 2025 it will pay regular semi-annual interest payment

for the following bond issue:

Aggregate Nominal Amount: USD 300,000,000.00 Maturity: 3 April 2042 Listing: Luxembourg Stock Exchange ISIN: XS0764314695, US157214AB31 Interest Payment Frequency: semi-annually Interest rate: 5.625% p.a. Interest Amount: USD 8,437,500.01