# EDGAR Filing Document

**Accession Number:** 0001005757
**File Stem:** 0001193125-26-237761
**Filing Date:** 2026-5
**Character Count:** 2843
**Document Hash:** 5f2cff453b4270b06476e1b989e568f9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-237761.hdr.sgml**: 20260526

**ACCESSION NUMBER**: 0001193125-26-237761

**CONFORMED SUBMISSION TYPE**: 15-12G

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260526

**DATE AS OF CHANGE**: 20260526

**EFFECTIVENESS DATE**: 20260526

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** CSG SYSTEMS INTERNATIONAL INC
- **CENTRAL INDEX KEY:** 0001005757
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-COMPUTER PROCESSING & DATA PREPARATION [7374]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 470783182
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 15-12G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-27512
- **FILM NUMBER:** 261015808

**BUSINESS ADDRESS:**
- **STREET 1:** 169 INVERNESS DR W
- **STREET 2:** SUITE 300
- **CITY:** ENGLEWOOD
- **STATE:** CO
- **ZIP:** 80112
- **BUSINESS PHONE:** 3037962850

**MAIL ADDRESS:**
- **STREET 1:** 169 INVERNESS DR W
- **STREET 2:** SUITE 300
- **CITY:** ENGLEWOOD
- **STATE:** CO
- **ZIP:** 80112

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

**FORM 15** 

**CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION** 

**UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934** 

**OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d)** 

**OF THE SECURITIES EXCHANGE ACT OF 1934.** 

**Commission File Number 0-27512** 

## CSG Systems International, Inc.
**(Exact name of registrant as specified in its charter)** 

**169 Inverness Dr W, Suite 300** 

**Englewood, CO 80112** 

**(303) 200-2000** 

**(Address, including zip code, and telephone number, including area code, of registrant's principal executive offices)** 

**Common Stock, par value $0.01 per share** 

**(Title of each class of securities covered by this Form)** 

**None** 

**(Titles of all other classes of securities for which a duty to file reports under section 13(a) or 15(d) remains)** 

Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to terminate or suspend the duty to file reports:

---

| | |
|:---|:---|
|  Rule 12g-4(a)(1) | ☒ |
|  Rule 12g-4(a)(2) | ☐ |
|  Rule 12h-3(b)(1)(i) | ☒ |
|  Rule 12h-3(b)(1)(ii) | ☐ |
|  Rule 15d-6 | ☐ |
|  Rule 15d-22(b) | ☐ |

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Approximate number of holders of record as of the certification or notice date: One (1)

Pursuant to the requirements of the Securities Exchange Act of 1934, CSG Systems International, Inc. has caused this certification/notice to be signed on its behalf by the undersigned duly authorized person.

---

| | | |
|:---|:---|:---|
|  | **CSG Systems International, Inc.** | **CSG Systems International, Inc.** |
| Date: May 26, 2026 | By: | /s/ Sylvain Seignour |
|  | Name:<br> Title: | Sylvain Seignour<br> President |

---