| 1 | UNTX | Unitrain, Inc. | added 10/1996; eliminated 4/1998 | | NAKINA |
| 2 | UNTX | MRC Rail Services, LLC | added 4/1998; 7/2000; eliminated 10/2003 | | NAKINA |
| 3 | UNTX | JAIX Leasing Co. | added 10/2003 | | NAKINA |
| 4 | UNTX | Railcar Custom Leasing, LLC | 7/2005; eliminated 7/2007 | | NAKINA |
| 5 | UNTX | Macquarie Rail Inc. | added 7/2007 | | NAKINA |
| 6 | UNTX | Unitrain, Inc. | added 10/96; eliminated 4/98 | | NRHS |
| 7 | UNTX | MRC Rail Services, LLC | added 4/98; 7/2000 | | NRHS |
| 8 | UNTX | *RAILCAR CUSTOM LEASING, LLC [JAIX LEASING CO.; MRC RAIL SERVICES LLC; UNITRAIN, INC.] | | | PWRC |
| 9 | UNTX | +MACQUARIE RAIL, INC. | | | PWRC |
| 10 | UNTX | Unitrain (MRC Rail Services) | | | RSRV |
