Shares of restricted stock may not be sold, assigned, transferred, pledged or otherwise encumbered or disposed of except as otherwise specifically provided in this Plan or the applicable restricted stock agreement. The Committee at the time of grant shall specify the date or dates (which may depend upon or be related to a period of continued employment with the Company, the achievement of performance goals or other conditions or a combination of such conditions) on which the shares of restricted stock vest, on which date or dates the nontransferability of the restricted stock shall lapse.