Investor Relations Contacts

John Rea
SVP, Head of Finance, Treasury, Investor Relations, Insurance & ESG Reporting
john.rea@csgi.com
210-687-4409
Davis Barker
Senior Manager, Investor Relations & Corporate Development
davis.barker@csgi.com
303-884-4506

Company Headquarters

CSG
169 Inverness Dr W
Suite 300
Englewood, CO 80112
T: +1 303 200 2000
F: +1 303 200 3333

Registrar and Transfer Agent

ComputerShare Trust Company, N.A.
PO Box 43006
Providence, RI 02940-3023
Phone: 781-575-2879
http://www.computershare.com

Accountant

KPMG