753 Likes Acquisitions of own shares and Disposals of own shares Brussels (Belgium), 9 April 2021 – 20:00 (CEST) – regulated information Acquisitions of own shares In accordance with article 8:4 of the Royal Decree of 29 April 2019 executing the Belgian Code on Companies and Associations, UCB SA/NV (“UCB” or the “Company) (Euronext Brussels: UCB) hereby discloses certain information in relation to its Share Repurchase Program 2021. Under this program, UCB has requested a financial intermediary to repurchase up to 750 000 UCB shares on its behalf under the terms of an initial discretionary mandate agreement with validity until 25 June 2021, effective as from 8 March 2021, to cover current and future obligations under UCB's Long Term Incentive Plans for its personnel. In the framework of this Share Repurchase Program 2021, UCB repurchased 39 251 UCB shares on Euronext Brussels in the period from 2 April 2021 up to and including 8 April 2021, as follows: For consistency reasons, UCB confirms that during the same period, it has not disposed of any UCB shares within the framework of the Long Term Incentive Program of the UCB Group. This press release is available on UCB SA/NV’s website via the following link. Investor Relations Antje Witte Investor Relations, UCB T +32.2.559.94.14 antje.witte@ucb.com Isabelle Ghellynck, Investor Relations, UCB T+32.2.559.9588, isabelle.ghellynck@ucb.com About UCB UCB, Brussels, Belgium (www.ucb.com) is a global biopharmaceutical company focused on the discovery and development of innovative medicines and solutions to transform the lives of people living with severe diseases of the immune system or of the central nervous system. With approximately 8 400 people in nearly 40 countries, the company generated revenue of € 5.3 billion in 2020. UCB is listed on Euronext Brussels (symbol: UCB). Follow us on Twitter: @UCB_news Asset Download 210409 - UCB Acquisitions and disposals of own shares ENG 210409- Verwerving en vervreemding van eigen aandelen NED 210409- Rachat et aliénation d actions propres FR 753 Likes