| Relationships | Role | Relationship Start | Relationship End |
| Creditanstalt Ag | Parent | 12/31/1990 | 12/30/1994 |
| Wienerberger Ziegelindustrie Ag | Parent | 12/31/1993 | 12/30/1994 |
| Wienerberger Baustoffindustrie Ag | Parent | 12/31/1992 | 12/30/1993 |
| Creditanstalt Ag | Parent | 4/4/1983 | 12/30/1990 |
| Unicredit Bank Austria Ag | Parent | 2/18/1987 | 3/30/1989 |
| Osterreichisches Credit-Institut Ag | Parent | 7/1/1987 | 3/30/1989 |
| American Treibacher Corporation | Subsidary | 9/30/1991 | 7/7/1994 |
| Treibacher (Usa) Corporation | Subsidary | 4/4/1983 | 12/30/1992 |