KALEON S.P.A DISCLOSUREShare Buybacks

Acquisition or disposal of the issuer's own shares / Transaction in own shares (aggregate version)

Kaleon S.p. A. Sede Legale Via Privata Maria Teresa, 4 20123 Milano (MI) Capitale sociale Euro 2.118.750,00 i.v. – Registro delle Imprese di Milano Monza Brianza Lodi , Codice Fiscale e Partita Iva n. 07040700150 REA Milano n. 1132883 Periodic disclosure on the Share Buyback Programme Milan, August 10 , 2026 – Kaleon S.p.A. (the "Company"), a company controlled by the Borromeo family and specialising in the management and enhancement of significant artistic, natural and museum heritage assets for tourism purposes, listed on Euronext Growth Milan (Ticker: KLN) and Euronext Gr owth Paris (Ticker: ALKLN), announces, with reference to the ordinary share buyback programme authorised by the Shareholders' Meeting held on 29 April 2026, that it purchased, on the Euronext Growth Milan and Euronext Growth Paris markets, during the perio d from August 3 to August 7, 2026 , a total of 794 treasury shares, representing 0,0056% of the Company's share capital, at an average purchase price of Euro 3,9673 per share, for an aggregate consideration of Euro 3.150,01. The purchases were executed through the authorised intermediary Equita SIM S.p.A., LEI code 815600E3E9BFBC8FAA85. A daily summary of the purchase transactions carried out on the market is set out below. Date No. of Shares Purchased Average Price (€) Total Consideration (€) Market 03/08/2026 138 4,0000 552,00 EXGM 03/08/2026 209 3,9500 825,55 ALXP 06/08/2026 197 3,9909 786,21 ALXP 06/08/2026 250 3,9450 986,25 EXGM Pursuant to Article 2(3) of Commission Delegated Regulation (EU) 2016/1052, a detailed breakdown of the purchases of Kaleon ordinary shares (ISIN: IT0005466963) executed during the above -mentioned period, based on the information provided by the intermedia ry appointed to implement the share buyback programme, is attached hereto. Following the purchases disclosed above, as of today's date Kaleon holds 794 treasury shares, representing 0,0056% of the Company's share capital. *** This press release is available on the Company’s website at www.kaleon.com , in the Investor Relations – Price Sensitive Press Releases, and on https://www.emarketstorage.it/en . Kaleon S.p. A. Sede Legale Via Privata Maria Teresa, 4 20123 Milano (MI)