For general IR-related questions:

Investor Relations

430 North McCarthy Boulevard
Milpitas, CA 95035 U.S.A.
Tel: 408-404-6305
E-mail: investor.relations@viavisolutions.com

For stock certificates, change of address, etc:

American Stock Transfer & Trust

6201 15th Avenue
Brooklyn, NY 11219
Tel: (718) 921-8200
Toll free: (800) 937-5449
E-mail: info@amstock.com
www.amstock.com