John Slack was Vice President, International Development at OSI Pharmaceuticals and also served as the Tarceva International Project Team Leader.

John previously served as Managing Director of Aston Molecules following its acquisition by OSI Pharmaceuticals. John managed the acquisition of Aston Molecules by OSI Pharmaceuticals and prior to that managed the financing and spinout of Aston Molecules from Aston University.

Prior to Aston Molecules, John held academic positions within the Experimental Chemotherapy Group, Department of Pharmaceutical Sciences at Aston University, the Department of Therapeutics and Clinical Pharmacology at Birmingham University and the Department of Chemical Pathology at King's College, London.

John has now co-founded PharMomentum Ltd as a “hands on”, problem solving consultancy group.