Committee Composition

	Audit Committee	Compensation Committee	Nominating and Corporate Governance Committee	Science Committee
Paul L. Berns	Audit Committee	Compensation Committee
Kristina M. Burow		Compensation Committee	Nominating and Corporate Governance Committee
Graham K. Cooper	Audit Committee	Compensation Committee
Nathaniel E. David, Ph.D.				Science Committee
Keith R. Leonard
Gilmore O’Neill, M.B.				Science Committee
Margo Roberts, Ph.D.			Nominating and Corporate Governance Committee	Science Committee
Camille D. Samuels	Audit Committee		Nominating and Corporate Governance Committee

= Chairperson = Member = Financial Expert = Chairman of the Board