| Relationships | Role | Relationship Start | Relationship End |
| Portigon Ag | Parent | 12/31/1982 | 8/31/2001 |
| Portigon Ag | Parent | 12/31/1980 | 12/30/1982 |
| Preussag Aktiengesellschaft | Subsidary | 12/31/1980 | 8/31/2001 |
| Westbtl Handel - Beteiligungsgesellschaft Mbh (Westbtl) | Subsidary | 12/31/1991 | 12/30/1992 |
| Phoenix Aktiengesellschaft | Subsidary | 12/31/1991 | 12/30/1992 |