Amendment. This Agreement may be amended or modified only by a written instrument signed by the Executive and by a duly authorized representative of the Company.

Amendment and Modification. This Agreement may only be amended, modified or supplemented by an agreement in writing signed by each Party hereto.

Amendment. This Agreement may only be amended by an agreement in writing signed by all of the parties hereto.

This Agreement may be amended or modified only by a written instrument signed by the Consultant and by a duly authorized representative of the Company.

Modification. This Agreement may not be amended or modified except by written instrument signed by an authorized representative of the Parties.

Amendment. This Agreement may not be amended except by an instrument in writing signed on behalf of each of the parties hereto.

This Agreement may not be changed or modified or released or discharged or abandoned or otherwise terminated, in whole or in part, except by an instrument in writing signed by Executive and an officer or other authorized executive of the Company.

Amendment. This Agreement may not be modified, altered or changed except in writing and signed by both parties wherein specific reference is made to this Agreement.

Amendment. This Agreement may be amended or modified by written agreement executed by the Holder and the Company.

Amendment. This Agreement may not be amended, or modified, except by an instrument in writing signed by each of the parties.

Amendments. This Agreement may be amended or modified at any time in any or all respects, but only by an instrument in writing executed by the parties hereto.