Employee acknowledges that, other than the Existing Option Agreement, the Extended Options, the New Option Agreements and the provisions contained in the indemnification agreement between Employee and the Company, attached as Exhibit B , to which the Employee is entitled pursuant to this Agreement, this Agreement shall supersede each agreement entered into between Employee and the Company regarding Employee’s employment, including, without limitation, any offer letter, the Retention Agreement and that certain employment letter agreement by and between Employee and the Company dated December 21, 2017. The Company and Employee acknowledge that the separation of the Employee’s employment with the Company is intended to constitute an involuntary separation from service for the purposes of Section 409A of the Code, and the related Department of Treasury regulations.  Employee acknowledges that there are no other agreements, written, oral or implied, and that he may not rely on any prior negotiations, discussions, representations or agreements.  This Agreement may be modified only in writing, and such writing must be signed by both parties and recited that it is intended to modify this Agreement.  This Agreement may be executed in separate counterparts, each of which is deemed to be an original and all of which taken together constitute one and the same agreement.