Charter deal through 2031 secures key revenue for CSG (NASDAQ: CSGS)

Rhea-AI Filing Summary

CSG Systems International has extended its core services agreement with Charter Communications, a major customer that accounted for approximately 19% of CSG’s total revenue in Q2 2025. An amendment to their Master Subscriber Management System Agreement, originally set to expire on March 31, 2028, now extends the relationship through September 30, 2031.

Under the amendment, revenue will be based mainly on monthly SaaS and related service charges per Charter customer account, plus usage-based ancillary services. The deal introduces reduced price escalators for 2025 and fixed annual escalators beginning in 2026, and CSG did not grant a renewal discount. CSG also keeps the exclusive right to provide print and mail services for all current and future Charter customer accounts, and both parties agreed to financial commitments, service levels, termination conditions, and liability limits.

Positive

• Extension of a major customer contract: CSG extended its Master Subscriber Management System Agreement with Charter, which generated approximately 19% of CSG’s total revenue in Q2 2025, through September 30, 2031, supporting longer-term revenue visibility.
• Maintained pricing and exclusivity benefits: The amendment adds fixed annual price escalators from 2026 and specifies that CSG did not provide a renewal discount, while preserving CSG’s exclusive right to provide print and mail services for all current and future Charter customer accounts.

Negative

• None.

Insights

Equity analyst – enterprise software contracts

CSG secures a long-term extension with a customer contributing 19% of revenue.

The amendment with Charter Communications locks in CSG’s subscriber management and related services relationship through September 30, 2031. Given that Charter represented approximately 19% of CSG’s total revenue for the quarter ended June 30, 2025, this reduces concentration-risk uncertainty by extending a key revenue stream beyond the prior March 31, 2028 expiry.

Revenue under the amendment will be driven primarily by monthly SaaS and related charges per Charter customer account plus ancillary usage-based services, reinforcing CSG’s recurring, volume-linked model. The inclusion of reduced price escalators for 2025 and fixed annual escalators from 2026, combined with no renewal discount, shapes the long-term pricing profile, with actual economics depending on Charter account volumes and service mix.

CSG also maintains exclusive rights to provide print and mail services to all current and future Charter customer accounts during the term, which helps preserve ancillary revenue tied to Charter’s base. Financial commitments, detailed service levels, termination conditions, and liability limitations set the operating framework; the full economics will be clearer once the redacted amendment is filed with the September 30, 2025 Form 10-Q.

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 04, 2025

CSG SYSTEMS INTERNATIONAL, INC.

(Exact name of Registrant as Specified in Its Charter)

Delaware			0-27512	47-0783182
(State or Other Jurisdiction of Incorporation)			(Commission File Number)	(IRS Employer Identification No.)
169 Inverness Dr W Suite 300
Englewood, Colorado				80112
(Address of Principal Executive Offices)				(Zip Code)

Registrant’s Telephone Number, Including Area Code: 303 200-2000

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common Stock, Par Value $0.01 Per Share		CSGS		The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 1.01 Entry into a Material Definitive Agreement.

Summary of Material Definitive Agreement. CSG Systems International, Inc. (“CSG”) is a party to a Master Subscriber Management System Agreement, dated August 1, 2017 (the “Current Agreement”) with Charter Communications Operating, LLC (“Charter”). The Current Agreement is scheduled to expire on March 31, 2028. For the second quarter ended June 30, 2025, CSG generated approximately 19% of its total revenue from Charter.

On September 4, 2025, CSG entered into an amendment (the “Amendment”) to the Current Agreement. The key terms of the Amendment are:

•The Amendment extends CSG’s contractual relationship with Charter through September 30, 2031.

•The revenue to be generated under the Amendment will be based primarily on monthly charges for SaaS and related services per Charter customer account, and various other ancillary services based on actual usage. The Amendment includes reduced price escalators for 2025 and annual fixed-price escalators beginning in 2026. CSG did not provide a renewal discount to Charter in the Amendment.

•The Amendment contains certain financial commitments both throughout the term and associated with the number of Charter customer accounts that are to be processed on CSG’s solutions.

•CSG maintains the exclusive right to provide print and mail services to all current and future Charter customer accounts through the term of the Amendment.

•The Amendment contains certain rights and obligations of both parties, including the following key items: (i) the termination of the agreement under certain conditions; (ii) various service level commitments; and (iii) remedies and limitations on liabilities associated with specified breaches of contractual obligations.

A copy of the Amendment, with confidential information redacted in accordance with SEC rules, will be filed as an exhibit to CSG’s Quarterly Report Form 10-Q for the quarter ended September 30, 2025.

Item 7.01 Regulation FD Disclosure.

The following information, including Exhibit 99.1 hereto, is furnished pursuant to Item 7.01 (Regulation FD Disclosure). This information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

On September 4, 2025, CSG issued a press release announcing that it had entered into an Amendment with Charter. A copy of the press release is attached to this Form 8-K as Exhibit 99.1 and is incorporated into Item 7.01 by reference.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

	Exhibit Number		Description
	99.1		Press release of CSG Systems International, Inc. dated September 4, 2025
	104		Cover Page Interactive Data File (embedded within Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

			CSG SYSTEMS INTERNATIONAL, INC.
Date:	September 4, 2025	By:	/s/ Rasmani Bhattacharya
			Rasmani Bhattacharya Chief Legal Officer

FAQ

What did CSG Systems International (CSGS) announce in this 8-K filing?

CSG Systems International announced that it entered into an amendment to its Master Subscriber Management System Agreement with Charter Communications Operating, LLC, extending the contractual relationship and updating key commercial terms.

How important is Charter Communications to CSG Systems International (CSGS)?

For the quarter ended June 30, 2025, CSG generated approximately 19% of its total revenue from Charter, making Charter a significant customer for the company.

Until when is the CSG and Charter agreement now extended?

The amendment extends CSG’s contractual relationship with Charter from the prior March 31, 2028 expiry date through September 30, 2031, lengthening the term by several years.

How will CSG generate revenue under the amended Charter agreement?

Revenue under the amendment will be based primarily on monthly SaaS and related service charges per Charter customer account, along with various ancillary services billed based on actual usage.

What pricing changes are included in the amended CSG–Charter agreement?

The amendment includes reduced price escalators for 2025 and annual fixed-price escalators beginning in 2026. CSG states that it did not provide a renewal discount to Charter.

Does CSG retain any exclusive rights with Charter under the amendment?

Yes. CSG maintains the exclusive right to provide print and mail services to all current and future Charter customer accounts for the term of the amendment.

Where can investors find the full text of the CSG–Charter amendment?

CSG plans to file a copy of the amendment, with confidential information redacted, as an exhibit to its Form 10-Q for the quarter ended September 30, 2025.