When all of the Obligations shall have been fully satisfied, the Assignee agrees that the security interest granted hereby shall terminate and it shall forthwith release the Assignor from its Obligations hereunder and the Assignee, at the request and expense of the Assignor, will promptly execute and deliver to the Assignor a proper instrument or instruments acknowledging the satisfaction and termination of this Pledge, and all rights, title and interests herein assigned shall revert to the Assignor, and this Pledge shall terminate.