| 1 | SPTX | Sugar Products Co. | 8/1920 | | NAKINA |
| 2 | SPTX | Transcisco Leasing Co. | added 4/1993; eliminated 7/1993; 1/1994 (not listed) | | NAKINA |
| 3 | SPTX | Trinity Rail Management, Inc. | added 7/1997; 7/2000-7/2005 | | NAKINA |
| 4 | SPTX | Transcisco Leasing Co. | added 4/93; eliminated 7/93; 1/94 | | NRHS |
| 5 | SPTX | Trinity Rail Management, Inc. | added 7/97; 7/2000 | | NRHS |
| 6 | SPTX | *SUGAR PRODUCTS CO. | | | PWRC |
| 7 | SPTX | +TRINITY RAIL MANAGEMENT INC. [(MCHX) TRANSCISCO LEASING COMPANY] | | | PWRC |
| 8 | SPTX | Trinity Rail Management | | | RSRV |
| 9 | SPTX | TRINITY RAIL MANAGEMENT | | | SCAC4 |