May 13 (Reuters) - Galapagos NV:: *GALAPAGOS ANNOUNCES STRATEGIC UPDATE ON PROPOSED SEPARATION, EXECUTIVE LEADERSHIP TRANSITION AND BOARD CHANGES *TO EXPLORE STRATEGIC ALTERNATIVES FOR EXISTING BUSINESSES *TO RE-EVALUATE SEPARATION PLAN DUE TO MARKET DEVELOPMENTS *HENRY GOSEBRUCH APPOINTED AS CEO OF GALAPAGOS *PAUL STOFFELS TO REMAIN AS ADVISOR FOR GALAPAGOS *JÉRÔME CONTAMINE APPOINTED AS CHAIR OF GALAPAGOS BOARD