CSG SYSTEMS INTERNATIONAL ADJUSTS CONVERTIBLE DEBT CONVERSION RATE FOR 2016 CONVERTIBLE NOTES AS A RESULT OF DIVIDEND

CSG(R) (NASDAQ: CSGS) today announced that as a result of its fourth quarter dividend of $0.25 per share on its common stock, it will adjust the conversion rate for its outstanding 4.25% Senior Convertible Notes issued in March 2016 (the '2016 Convertible Notes'). The adjustments are made in accordance with the terms of the Indenture Agreement.

CSG's 2016 Convertible Notes (Unrestricted CUSIP Number 126349 AF6) mature on March 15, 2036 and the original $230,000,000 aggregate principal amount remains outstanding. Effective December 2, 2021, the conversion rate for the 2016 Convertible Notes has been adjusted to 17.7621 shares for each $1,000 in principal amount of 2016 Convertible Notes (equivalent to a conversion price of approximately $56.30) per share of CSG common stock.

About CSG

CSG is a leader in innovative customer engagement, revenue management and payments solutions that make ordinary customer experiences extraordinary. Our cloud-first architecture and customer-obsessed mindset help companies around the world launch new digital services, expand into new markets, and create dynamic experiences that capture new customers and build brand loyalty. For nearly 40 years, CSG's technologies and people have helped some of the world's most recognizable brands solve their toughest business challenges and evolve to meet the demands of today's digital economy with future-ready solutions that drive exceptional customer experiences. With 5,000 employees in over 20 countries, CSG is the trusted technology provider for leading global brands in telecommunications, retail, financial services and healthcare. Our solutions deliver real world outcomes to more than 900 customers in over 120 countries. To learn more, visit us at csgi.com and connect with us on LinkedIn and Twitter.

Copyright (c) 2021 CSG Systems International, Inc. and/or its affiliates ('CSG'). All rights reserved. CSG(R) is a registered trademark of CSG Systems International, Inc. All third-party trademarks, service marks, and/or product names which are referenced in this document are the property of their respective owners, and all rights therein are reserved.

Contacts:

John Rea

Investor Relations

CSG

+1 (210) 687 4409

john.rea@csgi.com

Contact Details

Tammy Hovey

+1 917-520-2751

tammy.hovey@csgi.com

Company Website

https://www.csgi.com