Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001193125-26-229009
Filing Date
2026-05-18
Accepted
2026-05-18 16:30:09
Documents
1
Period of Report
2026-05-14

Document Format Files

Seq Description Document Type Size
1 4 ownership.html 4  
1 4 ownership.xml 4 4481
  Complete submission text file 0001193125-26-229009.txt   5907
Mailing Address 169 INVERNESS DR W SUITE 300 ENGLEWOOD CO 80112
Business Address 169 INVERNESS DR W SUITE 300 ENGLEWOOD CO 80112 3037962850
CSG SYSTEMS INTERNATIONAL INC (Issuer) CIK: 0001005757 (see all company filings)

EIN.: 470783182 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 7374 Services-Computer Processing & Data Preparation
(CF Office: 06 Technology)

Mailing Address 333 UPLANDS DR HILLSBOROUGH CA 94010
Business Address
Song Haiyan (Reporting) CIK: 0001804708 (see all company filings)

Type: 4 | Act: 34 | File No.: 000-27512 | Film No.: 26993978