| Relationships | Role | Relationship Start | Relationship End |
| Santander Investment I, S.A. | Parent | 5/26/1997 | 1/23/1998 |
| Sudacia S.A. | Parent | 8/22/1997 | 1/23/1998 |
| Sudacia S.A. | Parent | 5/26/1997 | 8/21/1997 |
| Sudacia S.A. | Parent | 6/30/1996 | 5/25/1997 |
| Fundacion Perez Companc | Parent | 11/22/1993 | 4/9/1997 |
| Fundacion Perez Companc | Parent | 11/22/1993 | 9/30/1996 |
| Sudacia S.A. | Parent | 12/31/1993 | 6/29/1996 |
| Sudacia S.A. | Parent | 11/22/1993 | 12/30/1993 |
| Fundacion Perez Companc | Parent | 12/31/1991 | 11/21/1993 |
| Fundacion Perez Companc | Parent | 10/3/1979 | 12/30/1991 |