Grantee shall not sell, assign, transfer, pledge, encumber or dispose of all or any of his or her Restricted Stock Units, either voluntarily or by operation of law, at any time prior to the Vesting Date; provided, however, that the Restricted Stock Units may be transferred by will or the laws of descent or distribution at any time.  Any attempted transfer of any Restricted Stock Units in violation of this Section 3 shall be invalid and of no effect.
restrictions on transfers