This Agreement and the Confidentiality and Invention Assignment Agreement contain the entire agreement and understanding of the parties with respect to the subject matter hereof, and supersede all prior or contemporaneous promises, understandings, or agreements, whether written or oral (including, without limitation, the offer letter between the Company and Executive, dated December 16, 2016) relating to the subject matter hereof.  This Agreement may not be changed orally, but only by an agreement in writing, signed by both parties.