UCB Investor Presentation — February 2020

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Strong 2019 performance

Increased mid -term guidance

for two core products

20 February 2020UCB Full Year Report 2019

Disclaimer & safe harbor

Forward -looking statements

This presentation contains forward- looking statements, including, without limitation, statements containing the words “believes” , “anticipates”, “expects”, “intends”, “plans”, “seeks”, “estimates”, “may”,

“will”, “continue” and similar expressions. These forward- looking statements are based on current plans, estimates and beliefs of management. All statements, other than statements of historical facts,

are statements that could be deemed forward- looking statements, including estimates of revenues, operating margins, capital expenditures, cash, other financial information, expected legal,

arbitration, political, regulatory or clinical results or practices and other such estimates and results. By their nature, such forward -looking statements are not guarantees of future performance and are

subject to known and unknown risks, uncertainties, and assumptions which might cause the actual results, financial condition, performance or achievements of UCB, or industry results, to be

materially different from any future results, performance, or achievements expressed or implied by such forward- looking statements contained in this presentation.

Important factors that could result in such differences include but are not limited to: changes in general economic, business and competitive conditions, the inability to obtain necessary regulatory

approvals or to obtain them on acceptable terms or within expected timing, costs associated with research and development, changes in the prospects for products in the pipeline or under

development by UCB, effects of future judicial decisions or governmental investigations, safety, quality, data integrity or m anufacturing issues; potential or actual data security and data privacy