. effective with the adoption of the 2005 plan , there are no future grants under the 2000 plan . shares available for future grant as of may 31 , 2010 are 2.7 million for the 2005 plan and 0.4 million for the director plan . certain executives are also granted performance-based restricted stock units ( 201crsu 201ds ) . rsus represent the right to earn shares of global stock if certain performance measures are achieved during the grant year