Chemical Works of Gedeon Richter Plc

Transaction in Own Shares • Nov 25, 2025

Extraordinary Announcement

Gedeon Richter Plc. hereby announces that, based on the authorization granted by the Annual General Meeting (resolution of the AGM No. 12/2025. 04. 29.), in order to ensure the share requirements of its employee and management share-based incentive programmes, on 24 November, 2025 the Company has purchased 16,500 treasury shares on average price of 9,647 HUF/share with the cooperation of UniCredit Bank Hungary Zrt. in the Budapest Stock Exchange.

After the transaction the number of the Company's treasury shares is 3,534,587; the total number of Company shares at Group level held in Treasury is 3,534,587.

The difference between the number of the Company's treasury shares disclosed in present announcement compared with the number of Company's treasury shares published on 31 October, 2025 in the announcement regarding the composition of share capital and number of voting rights attached to the shares of the Company on 31 October, 2025, is arising from 963 shares taken back altogether in November until this day by Gedeon Richter Plc. from Company employees whose employment relationship was terminated, because of share returning obligation stated in the Company's Programme related to employee share bonuses.

Budapest, 25 November, 2025

Gedeon Richter Plc.