| Relationships | Role | Relationship Start | Relationship End |
| Ampal-American Israel Corporation | Parent | 5/13/1981 | 7/7/1999 |
| Ampal Engineering (1994) Ltd. | Subsidary | 12/31/1995 | 10/19/1996 |
| Granite Hacarmel Investments Ltd. | Subsidary | 12/31/1993 | 12/30/1995 |
| Ampal Sciences, Inc. | Subsidary | 10/15/1982 | 3/1/1990 |
| Yissum Holdings | Subsidary | 12/31/1987 | 12/30/1988 |
| I.D.L. International Diagnostic Laboratories Ltd. | Subsidary | 6/1/1983 | 11/10/1988 |