CHESHIRE, UK--(Marketwire - June 13, 2008) - London, UK; Brentwood, TN, US: 13 June 2008 - Protherics PLC (“Protherics” or the “Company”), the international biopharmaceutical company focused on critical care and cancer, announces the vesting, on 12 June 2008, of a Performance Share Award (“Award”) to Saul Komisar, Director of Protherics PLC and President of Protherics Inc. under the terms of the Company’s Deferred Bonus Plan. The Award was made on 12 June 2006 and vests two years from its Date of Grant.