Cleantech Building Materials: Grant of Options TICKER: CBM GRANT OF OPTIONS Following March's announcement of the signature of the joint venture agreement between Diamond Wood China Limited, a subsidiary of Cleantech Building Materials plc ("CBM" or the "Company") and Nantong Acetic Acid Chemical Co., Ltd, an international Chinese chemical group ("NTAAC"), to build the first Accoya Wood factory in China in China ("Project"), CBM Directors are pleased to announce today the adoption of the Cleantech Building Materials PLC 2021 Unapproved Share Option Scheme ("Scheme"). The Company recognises that it is now vitally important to retain and fully incentivise the CBM senior management team during the next crucial three year phase of the Project. Accordingly it has today granted new options under the Scheme to certain Company directors and members of its senior management team ("Options") to subscribe for up to an aggregate of 6,562,574 ordinary shares of £0.10 each ("Ordinary Shares") in the Company.