Song Haiyan (CIK 1804708) reported 2 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-18). Recent activity: Sell CSGS (22,560 shares), Buy CSGS (3,085 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-18 | CSG SYSTEMS INTERNATIONAL INC (CSGS) | Director | Sell | 22,560 | $1.8M |
| 2025-06-11 | CSG SYSTEMS INTERNATIONAL INC (CSGS) | Director | Buy | 3,085 | $0 |
Source: SEC Form 4 filings · as of 2026-05-18