This Agreement and the Executive Change of Control Agreement (together, the “ Severance Agreements”) contain the entire agreement between the parties with respect to the right of Executive to receive severance compensation upon termination of his employment, and the Severance Agreements, the Executive Employment Agreement and the Pr oprietary Information and Inventions Agreement collectively represent the entire agreement and understanding between the parties as to the subject matter herein and supersedes all prior or contemporaneous agreements, whether written or oral. This Agreement may be modified only by agreement of the parties by a written instrument executed by the parties that is designated as an amendment to this Agreement.