Any assignment or transfer of any portion or all of this Warrant shall be made by surrender of this Warrant to the Company at its principal office with the form of assignment attached as Appendix A hereto duly executed. In such event, the Company shall, without charge, execute and deliver a new Warrant in substantially identical form (other than the number of Warrant Shares) in the name of the assignee named in such instrument of assignment and the portion of this Warrant assigned to the assignee shall promptly be cancelled.