Form 8.5 (EPT/RI) - Treatt plc

Key Information - The exempt principal trader involved is Investec Bank plc, which is acting in a client-serving capacity for Treatt plc [1] - The date of the dealings was 15 September 2025 [1] Dealings by the Exempt Principal Trader - Investec Bank plc purchased 19,881 ordinary shares of Treatt plc at a price of 264 per unit [3] - The same trader sold 20,000 ordinary shares of Treatt plc at a price of 264 per unit [3] Other Information - There are no indemnity or option arrangements related to the relevant securities that may influence dealings [8] - There are no agreements or understandings regarding voting rights or future acquisition or disposal of relevant securities [9] - The date of disclosure for this information is 16 September 2025 [9]