| Relationships | Role | Relationship Start | Relationship End |
| Portigon Ag | Parent | 12/31/1992 | 12/30/1993 |
| Gev Gesellschaft Fur Energie- Und Versorgungswerte Mbh | Parent | 12/31/1991 | 12/30/1992 |
| Horten Ag | Subsidary | 12/31/1991 | 12/30/1993 |
| Relationships | Role | Relationship Start | Relationship End |
| Portigon Ag | Parent | 12/31/1992 | 12/30/1993 |
| Gev Gesellschaft Fur Energie- Und Versorgungswerte Mbh | Parent | 12/31/1991 | 12/30/1992 |
| Horten Ag | Subsidary | 12/31/1991 | 12/30/1993 |