| Relationships | Role | Relationship Start | Relationship End |
| Sumitomo Mitsui Banking Corporation | Parent | 2/18/1957 | 3/30/1988 |
| Nec Electronics, U.S.A. | Subsidary | 3/31/1984 | 3/30/1988 |
| Nec Information Systems, Inc. | Subsidary | 3/31/1984 | 3/30/1988 |
| Nec Systems Laboratory, Inc. | Subsidary | 3/31/1984 | 3/30/1988 |
| Nec America, Inc. | Subsidary | 3/31/1984 | 3/30/1988 |