| Relationships | Role | Relationship Start | Relationship End |
| Dresdner Bank Aktiengesellschaft | Parent | 12/31/1987 | 7/9/2004 |
| Dresdner Bank Aktiengesellschaft | Parent | 12/31/1981 | 12/30/1987 |
| Bilfinger Berger Ag | Subsidary | 12/31/1981 | 7/8/2004 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Dresdner Bank Aktiengesellschaft | Buyer | Discontinued | 7/10/2004 |