| Relationships | Role | Relationship Start | Relationship End |
| International Bancshares Corporation | Parent | 10/2/2000 | |
| Gulfstar Group I, Ltd | Subsidary | 10/2/2000 | |
| Gulfstar Group Ii, Ltd | Subsidary | 12/31/2000 | |
| Gulfstar Merchant Banking I, Ltd | Subsidary | 10/2/2000 | |
| Gulfstar Merchant Banking Ii, Ltd. | Subsidary | 12/31/2005 | |
| Gulfstar Merchant Banking Iii, Ltd. | Subsidary | 5/8/2008 | |
| Gulfstar Merchant Banking Iv, Ltd | Subsidary | 6/1/2012 |