EXHIBIT 99.1 Galapagos increases share capital through subscription right exercises Mechelen, Belgium; 20 March 2023, 21.01 CET; regulated information – Galapagos NV (Euronext & NASDAQ: GLPG) announces a share capital increase arising from subscription right exercises. Galapagos issued 61,560 new ordinary shares on 20 March 2023, for a total capital increase (including issuance premium) of EUR 1,769,850.00. In accordance with Belgian transparency legislation, Galapagos also wishes to note that its total sha ...