Additional Listing

Application has been made for the New Shares to be admitted to trading on Eurolist of Euronext Brussels and Euronext Amsterdam and on the AiM market of the London Stock Exchange, and trading is expected to commence on these markets on 10 January 2006.
The total number of outstanding ordinary shares in Galapagos NV after this issue now amounts to 12,948,781.  The New Shares rank pari passu in all respects with the existing ordinary shares in the Company.
Those persons who held shares in BioFocus who did not accept the Offer and have not provided their details to Lloyds TSB Registrars in connection with the squeeze-out procedure should contact Lloyds TSB Registrars, The Causeway, Worthing, West Sussex BN99 6DA (Telephone: 0870 6092158 or, if telephoning from outside the United Kingdom, +44 (0)1903 702767) to claim their New Shares due to them under the Offer.
9 January 2006