| Relationships | Role | Relationship Start | Relationship End |
| Citytrust Banking Corporation | Parent | 11/28/1983 | 10/30/1996 |
| Citibank Overseas Investment Corporation | Parent | 12/3/1975 | 11/27/1983 |
| Philippine Long Distance Telephone Company | Subsidary | 12/31/1987 | 8/30/1990 |
| Citytrust Insurance Brokers Corporation | Subsidary | 12/18/1981 | 2/17/1983 |
| Naga Telephone Company | Subsidary | 12/31/1980 | 12/30/1981 |
| Philippine Long Distance Telephone Company | Subsidary | 12/31/1980 | 12/30/1981 |