He was both the board chairman and the CEO of the company from 2004 to 2012 .
El - Hibri has been the Emergent BioSolutions board of directors executive chairman since April 2012 .
El - Hibri was both the El - Hibri   and the CEO of the company from 2004 to 2012 .
El - Hibri has been the Emergent BioSolutions board of directors executive chairman since April 2012 .